diff --git a/README.md b/README.md
index 58fc04f..764491a 100644
--- a/README.md
+++ b/README.md
@@ -30,11 +30,7 @@ COPY --from=mlocati/php-extension-installer /usr/bin/install-php-extensions /usr
 RUN install-php-extensions gd xdebug
 ```
 
-`install-php-extensions` will install all the required APT packages.  
-If you want to remove the APT development packages (which shouldn't be needed after the PHP extensions have been installed) and other no longer required packages, you can use the `--cleanup` option (**EXPERIMENTAL**):
-```
-install-php-extensions --cleanup gd xdebug
-```
+`install-php-extensions` will install all the required APT/APK packages; at the end of the script execution, the no-more needed packages will be removed.
 
 ## Supported PHP extensions
 
diff --git a/install-php-extensions b/install-php-extensions
index dd0801f..4dec79a 100755
--- a/install-php-extensions
+++ b/install-php-extensions
@@ -18,6 +18,29 @@ resetIFS () {
 '
 }
 
+# Get the distribution name
+#
+# Output:
+#   alpine|debian
+getDistro () {
+	getDistro_os_id=''
+	if test -r /etc/os-release; then
+		getDistro_os_id="$(cat /etc/os-release | grep -E ^ID= | cut -d = -f 2)"
+		case "$getDistro_os_id" in
+			alpine|debian)
+				;;
+			*)
+				getDistro_os_id=''
+				;;
+		esac
+	fi
+	if test -n "$getDistro_os_id"; then
+		printf '%s' "$getDistro_os_id"
+	else
+		printf '%s' 'debian'
+	fi
+}
+
 # Get the PHP Major-Minor version as an integer value, in format MMmm (example: 506 for PHP 5.6.15)
 #
 # Output:
@@ -36,33 +59,33 @@ getPHPInstalledModules () {
 '
 	for getPHPInstalledModules_module in $(php -m); do
 		getPHPInstalledModules_moduleNormalized=''
-		case "${getPHPInstalledModules_module}" in
+		case "$getPHPInstalledModules_module" in
 			\[PHP\ Modules\])
 				;;
 			\[Zend\ Modules\])
 				break
 				;;
 			Core|PDO|PDO_*|Phar|Reflection|SimpleXML|SPL|SQLite|Xdebug)
-				getPHPInstalledModules_moduleNormalized=$(LC_CTYPE=C printf '%s' "${getPHPInstalledModules_module}" | tr '[:upper:]' '[:lower:]')
+				getPHPInstalledModules_moduleNormalized=$(LC_CTYPE=C printf '%s' "$getPHPInstalledModules_module" | tr '[:upper:]' '[:lower:]')
 				;;
 			Zend\ OPcache)
 				getPHPInstalledModules_moduleNormalized='opcache'
 				;;
 			*\ *|*A*|*B*|*C*|*D*|*E*|*F*|*G*|*H*|*I*|*J*|*K*|*L*|*M*|*N*|*O*|*P*|*Q*|*R*|*S*|*T*|*U*|*V*|*W*|*X*|*Y*|*Z*)
-				printf '### WARNING Unrecognized module name: %s ###\n' "${getPHPInstalledModules_module}" >&2
+				printf '### WARNING Unrecognized module name: %s ###\n' "$getPHPInstalledModules_module" >&2
 				;;
 			*)
-				getPHPInstalledModules_moduleNormalized="${getPHPInstalledModules_module}"
+				getPHPInstalledModules_moduleNormalized="$getPHPInstalledModules_module"
 				;;
 		esac
-		if test -n "${getPHPInstalledModules_moduleNormalized}"; then
-			if ! stringInList "${getPHPInstalledModules_moduleNormalized}" "${getPHPInstalledModules_result}"; then
-				getPHPInstalledModules_result="${getPHPInstalledModules_result} ${getPHPInstalledModules_moduleNormalized}"
+		if test -n "$getPHPInstalledModules_moduleNormalized"; then
+			if ! stringInList "$getPHPInstalledModules_moduleNormalized" "$getPHPInstalledModules_result"; then
+				getPHPInstalledModules_result="$getPHPInstalledModules_result $getPHPInstalledModules_moduleNormalized"
 			fi
 		fi
 	done
 	resetIFS
-	printf '%s' "${getPHPInstalledModules_result}"
+	printf '%s' "${getPHPInstalledModules_result# }"
 }
 
 # Get the handles of the modules to be installed
@@ -71,48 +94,47 @@ getPHPInstalledModules () {
 #   $@: all module handles
 #
 # Set:
-#   DO_APT_REMOVE
 #   PHP_MODULES_TO_INSTALL
 #
 # Output:
 #   Nothing
-getModulesToInstall () {
-	getModulesToInstall_alreadyInstalled="$(getPHPInstalledModules)"
-	getModulesToInstall_endArgs=''
-	DO_APT_REMOVE=''
+processCommandArguments () {
+	processCommandArguments_alreadyInstalled="$(getPHPInstalledModules)"
+	processCommandArguments_endArgs=0
 	PHP_MODULES_TO_INSTALL=''
 	while :; do
 		if test $# -lt 1; then
 			break
 		fi
-		getModulesToInstall_skip=''
-		if test -z "${getModulesToInstall_endArgs}"; then
-			case "${1}" in
+		processCommandArguments_skip=0
+		if test $processCommandArguments_endArgs -eq 0; then
+			case "$1" in
 				--cleanup)
-					getModulesToInstall_skip='y'
-					DO_APT_REMOVE='y'
+					printf '### WARNING the --cleanup option is deprecated (we always cleanup everything) ###\n' "$1" >&2
+					processCommandArguments_skip=1
 					;;
 				--)
-					getModulesToInstall_skip='y'
-					getModulesToInstall_endArgs='y'
+					processCommandArguments_skip=1
+					processCommandArguments_endArgs=1
 					;;
 				-*)
-					printf 'Unrecognized option: %s\n' "${1}" >&2
+					printf 'Unrecognized option: %s\n' "$1" >&2
 					exit 1
 					;;
 			esac
 		fi
-		if test -z "${getModulesToInstall_skip}"; then
-			if stringInList "${1}" "${PHP_MODULES_TO_INSTALL}"; then
-				printf '### WARNING Duplicated module name specified: %s ###\n' "${1}" >&2
-			elif stringInList "${1}" "${getModulesToInstall_alreadyInstalled}"; then
-				printf '### WARNING Module already installed: %s ###\n' "${1}" >&2
+		if test $processCommandArguments_skip -eq 0; then
+			if stringInList "$1" "$PHP_MODULES_TO_INSTALL"; then
+				printf '### WARNING Duplicated module name specified: %s ###\n' "$1" >&2
+			elif stringInList "$1" "$processCommandArguments_alreadyInstalled"; then
+				printf '### WARNING Module already installed: %s ###\n' "$1" >&2
 			else
-				PHP_MODULES_TO_INSTALL="${PHP_MODULES_TO_INSTALL} ${1}"
+				PHP_MODULES_TO_INSTALL="$PHP_MODULES_TO_INSTALL $1"
 			fi
 		fi
 		shift
 	done
+	PHP_MODULES_TO_INSTALL="${PHP_MODULES_TO_INSTALL# }"
 }
 
 # Sort the modules to be installed, in order to fix dependencies
@@ -123,16 +145,16 @@ getModulesToInstall () {
 # Output:
 #   Nothing
 sortModulesToInstall () {
-	if stringInList 'igbinary' "${PHP_MODULES_TO_INSTALL}"; then
-		PHP_MODULES_TO_INSTALL="$(removeStringFromList 'igbinary' "${PHP_MODULES_TO_INSTALL}")"
+	if stringInList 'igbinary' "$PHP_MODULES_TO_INSTALL"; then
+		PHP_MODULES_TO_INSTALL="$(removeStringFromList 'igbinary' "$PHP_MODULES_TO_INSTALL")"
 		if test -z "$PHP_MODULES_TO_INSTALL"; then
 			PHP_MODULES_TO_INSTALL='igbinary'
 		else
 			PHP_MODULES_TO_INSTALL="igbinary $PHP_MODULES_TO_INSTALL"
 		fi
 	fi
-	if stringInList 'msgpack' "${PHP_MODULES_TO_INSTALL}"; then
-		PHP_MODULES_TO_INSTALL="$(removeStringFromList 'msgpack' "${PHP_MODULES_TO_INSTALL}")"
+	if stringInList 'msgpack' "$PHP_MODULES_TO_INSTALL"; then
+		PHP_MODULES_TO_INSTALL="$(removeStringFromList 'msgpack' "$PHP_MODULES_TO_INSTALL")"
 		if test -z "$PHP_MODULES_TO_INSTALL"; then
 			PHP_MODULES_TO_INSTALL='msgpack'
 		else
@@ -141,175 +163,295 @@ sortModulesToInstall () {
 	fi
 }
 
-# Get the required APT packages for a specific PHP version and for the list of module handles
+# Get the required APT/APK packages for a specific PHP version and for the list of module handles
 #
 # Arguments:
 #   $1: the numeric PHP Major-Minor version
 #   $@: the PHP module handles
 #
-# Output:
-#   Space-separated list of APT packages
-getRequiredAptPackages () {
-	getRequiredAptPackages_result=''
-	getRequiredAptPackages_phpv=${1}
+# Set:
+#   PACKAGES_PERSISTENT
+#   PACKAGES_VOLATILE
+#
+# Return:
+#   0 (true): if we to install some package
+#   1 (false): if no package is required
+buildRequiredPackageLists () {
+	buildRequiredPackageLists_persistent=''
+	buildRequiredPackageLists_volatile=''
+	buildRequiredPackageLists_distro="$(getDistro)"
+	buildRequiredPackageLists_phpv=$1
 	while :; do
 		if test $# -lt 2; then
 			break
 		fi
 		shift
-		case "${1}" in
-			amqp)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} librabbitmq-dev libssh-dev"
+		case "$1@$buildRequiredPackageLists_distro" in
+			amqp@alpine)
+				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent rabbitmq-c"
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile $PHPIZE_DEPS rabbitmq-c-dev"
 				;;
-			bz2)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} libbz2-dev"
+			amqp@debian)
+				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent librabbitmq4"
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile librabbitmq-dev libssh-dev"
 				;;
-			cmark)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} cmake"
+			apcu@alpine)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile autoconf g++ make"
 				;;
-			enchant)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} libenchant-dev"
+			bz2@alpine)
+				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libbz2"
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile bzip2-dev"
 				;;
-			gd)
-				if test $getRequiredAptPackages_phpv -lt 700; then
-					getRequiredAptPackages_result="${getRequiredAptPackages_result} libvpx-dev libjpeg62-turbo-dev libpng-dev libxpm-dev libfreetype6-dev"
+			bz2@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libbz2-dev"
+				;;
+			cmark@alpine)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile cmake make g++ autoconf"
+				;;
+			cmark@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile cmake"
+				;;
+			enchant@alpine)
+				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent enchant"
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile enchant-dev"
+				;;
+			enchant@debian)
+				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libenchant1c2a"
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libenchant-dev"
+				;;
+			gd@alpine)
+				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent freetype libjpeg-turbo libpng libxpm"
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile freetype-dev libjpeg-turbo-dev libpng-dev libxpm-dev"
+				if test $buildRequiredPackageLists_phpv -le 506; then
+					buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libvpx"
+					buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libvpx-dev"
 				else
-					getRequiredAptPackages_result="${getRequiredAptPackages_result} libwebp-dev libjpeg62-turbo-dev libpng-dev libxpm-dev libfreetype6-dev"
+					buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libwebp"
+					buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libwebp-dev"
 				fi
 				;;
-			gmp)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} libgmp-dev"
+			gd@debian)
+				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libfreetype6 libjpeg62-turbo libpng16-16 libxpm4"
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libfreetype6-dev libjpeg62-turbo-dev libpng-dev libxpm-dev"
+				if test $buildRequiredPackageLists_phpv -le 506; then
+					buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libvpx?"
+					buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libvpx-dev"
+				else
+					buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libwebp6"
+					buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libwebp-dev"
+				fi
 				;;
-			imap)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} libc-client-dev libkrb5-dev"
+			gettext@alpine)
+				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libintl"
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile gettext-dev"
 				;;
-			interbase)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} firebird-dev libib-util"
+			gmp@alpine)
+				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent gmp"
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile gmp-dev"
 				;;
-			imagick)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} libmagickwand-dev"
+			gmp@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libgmp-dev"
 				;;
-			intl)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} libicu-dev"
+			igbinary@alpine)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile autoconf g++ make"
 				;;
-			ldap)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} libldap2-dev"
+			imagick@alpine)
+				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent imagemagick"
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile imagemagick-dev autoconf g++ make re2c"
 				;;
-			memcache)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} zlib1g-dev"
+			imagick@debian)
+				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libmagickwand-6.q16-?"
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libmagickwand-dev"
 				;;
-			memcached)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} libmemcached-dev zlib1g-dev"
+			imap@alpine)
+				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent c-client"
+				if test -z "$(apk info | grep -E ^libssl)"; then
+					buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libssl1.0"
+				fi
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile krb5-dev imap-dev openssl openssl-dev"
 				;;
-			mcrypt)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} libmcrypt-dev"
+			imap@debian)
+				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libc-client2007e"
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libc-client-dev libkrb5-dev"
 				;;
-			mssql)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} freetds-dev"
+
+			interbase@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile firebird-dev libib-util"
 				;;
-			odbc)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} unixodbc-dev"
+			intl@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libicu-dev"
 				;;
-			pdo_dblib)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} freetds-dev"
+			ldap@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libldap2-dev"
 				;;
-			pdo_firebird)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} firebird-dev libib-util"
+			memcache@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile zlib1g-dev"
 				;;
-			pdo_pgsql)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} libpq-dev"
+			memcached@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libmemcached-dev zlib1g-dev"
 				;;
-			pdo_odbc)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} unixodbc-dev"
+			mcrypt@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libmcrypt-dev"
 				;;
-			pdo_sqlsrv)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} unixodbc-dev"
+			mssql@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile freetds-dev"
 				;;
-			pgsql)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} libpq-dev"
+			odbc@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile unixodbc-dev"
 				;;
-			pspell)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} libpspell-dev"
+			pdo_dblib@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile freetds-dev"
 				;;
-			recode)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} librecode-dev"
+			pdo_firebird@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile firebird-dev libib-util"
 				;;
-			ssh2)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} libssh2-1-dev"
+			pdo_pgsql@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libpq-dev"
 				;;
-			snmp)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} snmp libsnmp-dev"
+			pdo_odbc@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile unixodbc-dev"
 				;;
-			soap)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} libxml2-dev"
+			pdo_sqlsrv@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile unixodbc-dev"
 				;;
-			solr)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} libcurl4-gnutls-dev libxml2-dev"
+			pgsql@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libpq-dev"
 				;;
-			sqlsrv)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} unixodbc-dev"
+			pspell@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libpspell-dev"
 				;;
-			sybase_ct)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} freetds-dev"
+			recode@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile librecode-dev"
 				;;
-			tidy)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} libtidy-dev"
+			ssh2@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libssh2-1-dev"
 				;;
-			uuid)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} uuid-dev"
+			snmp@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile snmp libsnmp-dev"
 				;;
-			wddx)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} libxml2-dev"
+			soap@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libxml2-dev"
 				;;
-			xmlrpc)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} libxml2-dev"
+			solr@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libcurl4-gnutls-dev libxml2-dev"
 				;;
-			xsl)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} libxslt-dev"
+			sqlsrv@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile unixodbc-dev"
 				;;
-			yaml)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} libyaml-dev"
+			sybase_ct@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile freetds-dev"
 				;;
-			zip)
-				getRequiredAptPackages_result="${getRequiredAptPackages_result} cmake zlib1g-dev libbz2-dev libmbedtls-dev"
+			tidy@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libtidy-dev"
+				;;
+			uuid@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile uuid-dev"
+				;;
+			wddx@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libxml2-dev"
+				;;
+			xmlrpc@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libxml2-dev"
+				;;
+			xsl@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libxslt-dev"
+				;;
+			yaml@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libyaml-dev"
+				;;
+			zip@debian)
+				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile cmake zlib1g-dev libbz2-dev libmbedtls-dev"
 				;;
 		esac
 	done
-	printf '%s' "${getRequiredAptPackages_result}"
+	PACKAGES_PERSISTENT=''
+	PACKAGES_VOLATILE=''
+	if test -z "$buildRequiredPackageLists_persistent$buildRequiredPackageLists_volatile"; then
+		return 0
+	fi
+	case "$buildRequiredPackageLists_distro" in
+		alpine)
+			apk update
+			;;
+		debian)
+			DEBIAN_FRONTEND=noninteractive apt-get update
+			DEBIAN_FRONTEND=noninteractive apt-get autoremove --purge -y
+			;;
+	esac
+	if test -n "$buildRequiredPackageLists_persistent"; then
+		PACKAGES_PERSISTENT="$(expandPackagesToBeInstalled $buildRequiredPackageLists_persistent)"
+	fi
+	if test -n "$buildRequiredPackageLists_volatile"; then
+		resetIFS
+		for buildRequiredPackageLists_package in $(expandPackagesToBeInstalled $buildRequiredPackageLists_volatile); do
+			if ! stringInList "$buildRequiredPackageLists_package" "$PACKAGES_PERSISTENT"; then
+				PACKAGES_VOLATILE="$PACKAGES_VOLATILE $buildRequiredPackageLists_package"
+			fi
+		done
+		PACKAGES_VOLATILE="${PACKAGES_VOLATILE# }"
+	fi
 }
 
-# Get the newly installed APT packages that will be no more needed after the installation of PHP extensions
+# Get the full list of APT/APK packages that will be installed, given the required packages
 #
 # Arguments:
-#   $1: the list of APT packages that will be installed
+#   $1: the list of required APT/APK packages
 #
 # Output:
-#   Space-separated list of APT packages to be removed
-getAptPackagesToRemove () {
-	getAptPackagesToRemove_inNewPackages=''
-	getAptPackagesToRemove_result=''
-	IFS='
+#   Space-separated list of every APT/APK packages that will be installed
+expandPackagesToBeInstalled () {
+	expandPackagesToBeInstalled_result=''
+	case "$(getDistro)" in
+		alpine)
+			IFS='
 '
-	for getAptPackagesToRemove_aptLine in $(DEBIAN_FRONTEND=noninteractive apt-get install -sy $@); do
-		if test -z "${getAptPackagesToRemove_inNewPackages}"; then
-			if test "${getAptPackagesToRemove_aptLine}" = 'The following NEW packages will be installed:'; then
-				getAptPackagesToRemove_inNewPackages='y'
-				resetIFS
-			fi
-		elif test "${getAptPackagesToRemove_aptLine}" = "${getAptPackagesToRemove_aptLine# }"; then
-			getAptPackagesToRemove_inNewPackages=''
-		else
-			for getAptPackagesToRemove_newPackage in ${getAptPackagesToRemove_aptLine}; do
-				case "${getAptPackagesToRemove_newPackage}" in
-					*-dev|cmake|cmake-data)
-						getAptPackagesToRemove_result="${getAptPackagesToRemove_result} ${getAptPackagesToRemove_newPackage}"
-						;;
-				esac
+			for expandPackagesToBeInstalled_line in $(apk add --simulate $@); do
+				if test -n "$(printf '%s' "$expandPackagesToBeInstalled_line" | grep -E '^\([0-9]*/[0-9]*) Installing ')"; then
+					expandPackagesToBeInstalled_result="$expandPackagesToBeInstalled_result $(printf '%s' "$expandPackagesToBeInstalled_line" | cut -d ' ' -f 3)"
+				fi
 			done
-		fi
-	done
-	resetIFS
-	printf '%s' "${getAptPackagesToRemove_result}"
+			resetIFS
+			;;
+		debian)
+			expandPackagesToBeInstalled_inNewPackages=0
+			IFS='
+'
+			for expandPackagesToBeInstalled_line in $(DEBIAN_FRONTEND=noninteractive apt-get install -sy $@); do
+				if test $expandPackagesToBeInstalled_inNewPackages -eq 0; then
+					if test "$expandPackagesToBeInstalled_line" = 'The following NEW packages will be installed:'; then
+						expandPackagesToBeInstalled_inNewPackages=1
+					fi
+				elif test "$expandPackagesToBeInstalled_line" = "${expandPackagesToBeInstalled_line# }"; then
+					break
+				else
+					resetIFS
+					for expandPackagesToBeInstalled_newPackage in $expandPackagesToBeInstalled_line; do
+						expandPackagesToBeInstalled_result="$expandPackagesToBeInstalled_result $expandPackagesToBeInstalled_newPackage"
+					done
+					IFS='
+'
+				fi
+			done
+			resetIFS
+			;;
+	esac
+	printf '%s' "${expandPackagesToBeInstalled_result# }"
+}
+
+# Install the required APT/APK packages
+#
+# Arguments:
+#   $@: the list of APT/APK packages to be installed
+installRequiredPackages () {
+	printf '### INSTALLING REQUIRED PACKAGES ###\n'
+	case "$(getDistro)" in
+		alpine)
+			apk add $PACKAGES_PERSISTENT $PACKAGES_VOLATILE
+			;;
+		debian)
+			DEBIAN_FRONTEND=noninteractive apt-get install -y $PACKAGES_PERSISTENT $PACKAGES_VOLATILE
+			;;
+	esac
 }
 
 # Install a bundled PHP module given its handle
@@ -319,20 +461,20 @@ getAptPackagesToRemove () {
 #   $2: the handle of the PHP module
 #
 # Set:
-#   UNNEEDED_APT_PACKAGE_LINKS
+#   UNNEEDED_PACKAGE_LINKS
 #
 # Output:
 #   Nothing
 installBundledModule () {
-	printf '### INSTALLING BUNDLED MODULE %s ###\n' "${2}"
-	case "${2}" in
+	printf '### INSTALLING BUNDLED MODULE %s ###\n' "$2"
+	case "$2" in
 		gd)
 			if test $1 -le 506; then
-				docker-php-ext-configure gd --with-gd --with-vpx-dir --with-jpeg-dir --with-png-dir --with-zlib-dir --with-xpm-dir --with-freetype-dir --enable-gd-native-ttf
+				docker-php-ext-configure gd --with-gd --with-jpeg-dir --with-png-dir --with-zlib-dir --with-xpm-dir --with-freetype-dir --enable-gd-native-ttf --with-vpx-dir
 			elif test $1 -le 701; then
-				docker-php-ext-configure gd --with-gd --with-webp-dir --with-jpeg-dir --with-png-dir --with-zlib-dir --with-xpm-dir --with-freetype-dir --enable-gd-native-ttf
+				docker-php-ext-configure gd --with-gd --with-jpeg-dir --with-png-dir --with-zlib-dir --with-xpm-dir --with-freetype-dir --enable-gd-native-ttf --with-webp-dir
 			elif test $1 -le 703; then
-				docker-php-ext-configure gd --with-gd --with-webp-dir --with-jpeg-dir --with-png-dir --with-zlib-dir --with-xpm-dir --with-freetype-dir
+				docker-php-ext-configure gd --with-gd --with-jpeg-dir --with-png-dir --with-zlib-dir --with-xpm-dir --with-freetype-dir --with-webp-dir
 			else
 				docker-php-ext-configure gd --enable-gd --with-webp --with-jpeg --with-xpm --with-freetype
 			fi
@@ -342,7 +484,7 @@ installBundledModule () {
 				506)
 					if ! test -f /usr/include/gmp.h; then
 						ln -s /usr/include/x86_64-linux-gnu/gmp.h /usr/include/gmp.h
-						UNNEEDED_APT_PACKAGE_LINKS="${UNNEEDED_APT_PACKAGE_LINKS} /usr/include/gmp.h"
+						UNNEEDED_PACKAGE_LINKS="$UNNEEDED_PACKAGE_LINKS /usr/include/gmp.h"
 					fi
 					;;
 			esac
@@ -358,7 +500,7 @@ installBundledModule () {
 				506|700|701|702|703|704)
 					if ! test -f /usr/lib/libsybdb.so; then
 						ln -s /usr/lib/x86_64-linux-gnu/libsybdb.so /usr/lib/libsybdb.so
-						UNNEEDED_APT_PACKAGE_LINKS="${UNNEEDED_APT_PACKAGE_LINKS} /usr/lib/libsybdb.so"
+						UNNEEDED_PACKAGE_LINKS="$UNNEEDED_PACKAGE_LINKS /usr/lib/libsybdb.so"
 					fi
 					;;
 			esac
@@ -395,7 +537,7 @@ installBundledModule () {
 			fi
 			;;
 	esac
-	docker-php-ext-install -j$(nproc) "${2}"
+	docker-php-ext-install -j$(nproc) "$2"
 }
 
 # Fetch a tar.gz file, extract it and returns the path of the extracted folder.
@@ -408,24 +550,24 @@ installBundledModule () {
 getPackageSource () {
 	mkdir -p /tmp/src
 	getPackageSource_tempFile=$(mktemp -p /tmp/src)
-	curl -L -s -S -o "${getPackageSource_tempFile}" "$1"
+	curl -L -s -S -o "$getPackageSource_tempFile" "$1"
 	getPackageSource_tempDir=$(mktemp -p /tmp/src -d)
-	cd "${getPackageSource_tempDir}"
-	tar -xzf "${getPackageSource_tempFile}"
+	cd "$getPackageSource_tempDir"
+	tar -xzf "$getPackageSource_tempFile"
 	cd - >/dev/null
-	unlink "${getPackageSource_tempFile}"
+	unlink "$getPackageSource_tempFile"
 	getPackageSource_outDir=''
-	for getPackageSource_i in $(ls "${getPackageSource_tempDir}"); do
-		if test -n "${getPackageSource_outDir}" || test -f "${getPackageSource_tempDir}/${getPackageSource_i}"; then
+	for getPackageSource_i in $(ls "$getPackageSource_tempDir"); do
+		if test -n "$getPackageSource_outDir" || test -f "$getPackageSource_tempDir/$getPackageSource_i"; then
 			getPackageSource_outDir=''
 			break
 		fi
-		getPackageSource_outDir="${getPackageSource_tempDir}/${getPackageSource_i}"
+		getPackageSource_outDir="$getPackageSource_tempDir/$getPackageSource_i"
 	done
-	if test -n "${getPackageSource_outDir}"; then
-		printf '%s' "${getPackageSource_outDir}"
+	if test -n "$getPackageSource_outDir"; then
+		printf '%s' "$getPackageSource_outDir"
 	else
-		printf '%s' "${getPackageSource_tempDir}"
+		printf '%s' "$getPackageSource_tempDir"
 	fi
 }
 
@@ -437,14 +579,14 @@ getPackageSource () {
 #   $3: the options of the configure command
 #   $4: the value of CFLAGS
 installModuleFromSource () {
-	printf '### INSTALLING MODULE %s FROM SOURCE CODE ###\n' "${1}"
-	installModuleFromSource_dir="$(getPackageSource "${2}")"
-	cd "${installModuleFromSource_dir}"
+	printf '### INSTALLING MODULE %s FROM SOURCE CODE ###\n' "$1"
+	installModuleFromSource_dir="$(getPackageSource "$2")"
+	cd "$installModuleFromSource_dir"
 	phpize
-	./configure ${3} CFLAGS="${4:-}"
+	./configure $3 CFLAGS="${4:-}"
 	make -j$(nproc) install
 	cd --
-	docker-php-ext-enable "${1}"
+	docker-php-ext-enable "$1"
 }
 
 # Install a PECL PHP module given its handle
@@ -453,18 +595,18 @@ installModuleFromSource () {
 #   $1: the numeric PHP Major-Minor version
 #   $2: the handle of the PHP module
 installPECLModule () {
-	printf '### INSTALLING PECL MODULE %s ###\n' "${2}"
-	installPECLModule_actual="${2}"
+	printf '### INSTALLING PECL MODULE %s ###\n' "$2"
+	installPECLModule_actual="$2"
 	installPECLModule_stdin='\n'
-	case "${2}" in
+	case "$2" in
 		apcu)
 			if test $1 -le 506; then
-				installPECLModule_actual="${2}-4.0.11"
+				installPECLModule_actual="$2-4.0.11"
 			fi
 			;;
 		memcached)
 			if test $1 -lt 700; then
-				installPECLModule_actual="${2}-2.2.0"
+				installPECLModule_actual="$2-2.2.0"
 				# --with-libmemcached-dir (default: no)      Set the path to libmemcached install prefix
 			else
 				installPECLModule_stdin=''
@@ -490,47 +632,47 @@ installPECLModule () {
 			;;
 		msgpack)
 			if test $1 -le 506; then
-				installPECLModule_actual="${2}-0.5.7"
+				installPECLModule_actual="$2-0.5.7"
 			fi
 			;;
 		parallel)
 			if test $1 -le 701; then
-				installPECLModule_actual="${2}-0.8.3"
+				installPECLModule_actual="$2-0.8.3"
 			fi
 			;;
 		pcov)
 			if test $1 -lt 701; then
-				installPECLModule_actual="${2}-0.9.0"
+				installPECLModule_actual="$2-0.9.0"
 			fi
 			;;
 		pdo_sqlsrv | sqlsrv)
 			# https://docs.microsoft.com/it-it/sql/connect/php/system-requirements-for-the-php-sql-driver?view=sql-server-2017
 			if test $1 -le 700; then
-				installPECLModule_actual="${2}-5.3.0"
+				installPECLModule_actual="$2-5.3.0"
 			elif test $1 -ge 704; then
-				installPECLModule_actual="${2}-5.7.0preview"
+				installPECLModule_actual="$2-5.7.0preview"
 			fi
 			;;
 		pthreads)
 			if test $1 -lt 700; then
-				installPECLModule_actual="${2}-2.0.10"
+				installPECLModule_actual="$2-2.0.10"
 			fi
 			;;
 		redis)
 			if test $1 -le 506; then
-				installPECLModule_actual="${2}-4.3.0"
+				installPECLModule_actual="$2-4.3.0"
 			fi
 			# enable-redis-igbinary? enable-redis-lzf?
 			php --ri igbinary >/dev/null 2>/dev/null && installPECLModule_stdin='yes\nyes\n' || installPECLModule_stdin='no\nyes\n'
 			;;
 		solr)
 			if test $1 -le 506; then
-				installPECLModule_actual="${2}-2.4.0"
+				installPECLModule_actual="$2-2.4.0"
 			fi
 			;;
 		ssh2)
 			if test $1 -le 506; then
-				installPECLModule_actual="${2}-0.13"
+				installPECLModule_actual="$2-0.13"
 			else
 				# see https://bugs.php.net/bug.php?id=78560
 				installPECLModule_actual='https://pecl.php.net/get/ssh2'
@@ -538,35 +680,35 @@ installPECLModule () {
 			;;
 		xdebug)
 			if test $1 -lt 501; then
-				installPECLModule_actual="${2}-2.0.5"
+				installPECLModule_actual="$2-2.0.5"
 			elif test $1 -lt 504; then
-				installPECLModule_actual="${2}-2.2.7"
+				installPECLModule_actual="$2-2.2.7"
 			elif test $1 -lt 505; then
-				installPECLModule_actual="${2}-2.4.1"
+				installPECLModule_actual="$2-2.4.1"
 			elif test $1 -lt 700; then
-				installPECLModule_actual="${2}-2.5.5"
+				installPECLModule_actual="$2-2.5.5"
 			elif test $1 -ge 704; then
-				installPECLModule_actual="${2}-2.8.0beta2"
+				installPECLModule_actual="$2-2.8.0beta2"
 			fi
 			;;
 		uopz)
 			if test $1 -lt 700; then
-				installPECLModule_actual="${2}-2.0.7"
+				installPECLModule_actual="$2-2.0.7"
 			elif test $1 -lt 701; then
-				installPECLModule_actual="${2}-5.0.2"
+				installPECLModule_actual="$2-5.0.2"
 			fi
 			;;
 		yaml)
 			if test $1 -lt 700; then
-				installPECLModule_actual="${2}-1.3.1"
+				installPECLModule_actual="$2-1.3.1"
 			fi
 			;;
 	esac
-	if test "${2}" != "${installPECLModule_actual}"; then
-		printf '  (installing version %s)\n' "${installPECLModule_actual}"
+	if test "$2" != "$installPECLModule_actual"; then
+		printf '  (installing version %s)\n' "$installPECLModule_actual"
 	fi
-	printf "${installPECLModule_stdin}" | pecl install "${installPECLModule_actual}" 
-	docker-php-ext-enable "${2}"
+	printf "$installPECLModule_stdin" | pecl install "$installPECLModule_actual"
+	docker-php-ext-enable "$2"
 }
 
 # Check if a string is in a list of space-separated string
@@ -579,8 +721,8 @@ installPECLModule () {
 #   0 (true): if the string is in the list
 #   1 (false): if the string is not in the list
 stringInList () {
-	for stringInList_listItem in ${2}; do
-		if test "${1}" = "${stringInList_listItem}"; then
+	for stringInList_listItem in $2; do
+		if test "$1" = "$stringInList_listItem"; then
 			return 0
 		fi
 	done
@@ -597,8 +739,8 @@ stringInList () {
 #   The list without the word
 removeStringFromList () {
 	removeStringFromList_result=''
-	for removeStringFromList_listItem in ${2}; do
-		if test "${1}" != "${removeStringFromList_listItem}"; then
+	for removeStringFromList_listItem in $2; do
+		if test "$1" != "$removeStringFromList_listItem"; then
 			if test -z "$removeStringFromList_result"; then
 				removeStringFromList_result="$removeStringFromList_listItem"
 			else
@@ -606,84 +748,96 @@ removeStringFromList () {
 			fi
 		fi
 	done
-	printf '%s' "${removeStringFromList_result}"
+	printf '%s' "$removeStringFromList_result"
+}
+
+# Cleanup everything at the end of the execution
+cleanup () {
+	cleanup_distro="$(getDistro)"
+	if test -n "$UNNEEDED_PACKAGE_LINKS"; then
+		printf '### REMOVING UNNEEDED PACKAGE LINKS ###\n'
+		for cleanup_link in $UNNEEDED_PACKAGE_LINKS; do
+			if test -L "$cleanup_link"; then
+				rm -f "$cleanup_link"
+			fi
+		done
+	fi
+	if test -n "$PACKAGES_VOLATILE"; then
+		printf '### REMOVING UNNEEDED PACKAGES ###\n'
+		case "$cleanup_distro" in
+			alpine)
+				apk del --purge $PACKAGES_VOLATILE
+				;;
+			debian)
+				DEBIAN_FRONTEND=noninteractive apt-get remove --purge -y $PACKAGES_VOLATILE
+				;;
+		esac
+	fi
+	case "$cleanup_distro" in
+		alpine)
+			rm -rf /var/cache/apk/*
+			;;
+		debian)
+			rm -rf /var/lib/apt/lists/*
+			;;
+	esac
+	docker-php-source delete
+	rm -rf /tmp/pear
+	rm -rf /tmp/src
 }
 
 resetIFS
 PHP_MAJMIN_VERSION=$(getPHPMajorMinor)
-case "${PHP_MAJMIN_VERSION}" in
+case "$PHP_MAJMIN_VERSION" in
 	506|700|701|702|703|704)
 		;;
 	*)
 		printf "### ERROR: Unsupported PHP version: %s.%s ###\n" $(( PHP_MAJMIN_VERSION / 100 )) $(( PHP_MAJMIN_VERSION % 100 ))
 esac
-UNNEEDED_APT_PACKAGES=''
-UNNEEDED_APT_PACKAGE_LINKS=''
-getModulesToInstall "$@"
-sortModulesToInstall
+UNNEEDED_PACKAGE_LINKS=''
+processCommandArguments "$@"
 
-if test -n "${PHP_MODULES_TO_INSTALL}"; then
-	REQUIRED_APT_PACKAGES=$(getRequiredAptPackages ${PHP_MAJMIN_VERSION} ${PHP_MODULES_TO_INSTALL})
-	if test -n "${REQUIRED_APT_PACKAGES}"; then
-		printf '### INSTALLING REQUIRED APT PACKAGES ###\n'
-		DEBIAN_FRONTEND=noninteractive apt-get update -y
-		if test -n "${DO_APT_REMOVE}"; then
-			UNNEEDED_APT_PACKAGES=$(getAptPackagesToRemove ${REQUIRED_APT_PACKAGES})
-		fi
-		DEBIAN_FRONTEND=noninteractive apt-get install -y ${REQUIRED_APT_PACKAGES}
-	fi
-	docker-php-source extract
-	BUNDLED_MODULES="$(find /usr/src/php/ext -mindepth 2 -maxdepth 2 -type f -name 'config.m4' | xargs -n1 dirname | xargs -n1 basename | xargs)"
-	for PHP_MODULE_TO_INSTALL in ${PHP_MODULES_TO_INSTALL}; do
-		if stringInList "${PHP_MODULE_TO_INSTALL}" "${BUNDLED_MODULES}"; then
-			installBundledModule ${PHP_MAJMIN_VERSION} "${PHP_MODULE_TO_INSTALL}"
-		else
-			MODULE_SOURCE=''
-			MODULE_SOURCE_CONFIGOPTIONS=''
-			MODULE_SOURCE_CFLAGS=''
-			case "${PHP_MODULE_TO_INSTALL}" in
-				cmark)
-					MODULE_SOURCE=https://github.com/krakjoe/cmark/archive/v1.0.0.tar.gz
-					cd "$(getPackageSource https://github.com/commonmark/cmark/archive/0.28.3.tar.gz)"
-					make install
-					cd -
-					MODULE_SOURCE_CONFIGOPTIONS=--with-cmark
-					;;
-				igbinary)
-					if test ${PHP_MAJMIN_VERSION} -lt 700; then
-						MODULE_SOURCE="https://github.com/igbinary/igbinary/archive/2.0.8.tar.gz"
-					else
-						MODULE_SOURCE="https://github.com/igbinary/igbinary/archive/3.0.1.tar.gz"
-					fi
-					MODULE_SOURCE_CONFIGOPTIONS=--enable-igbinary
-					MODULE_SOURCE_CFLAGS='-O2 -g'
-					;;
-			esac
-			if test -n "${MODULE_SOURCE}"; then
-				installModuleFromSource "${PHP_MODULE_TO_INSTALL}" "${MODULE_SOURCE}" "${MODULE_SOURCE_CONFIGOPTIONS}" "${MODULE_SOURCE_CFLAGS}"
-			else
-				installPECLModule ${PHP_MAJMIN_VERSION} "${PHP_MODULE_TO_INSTALL}"
-			fi
-		fi
-	done
-	if test -n "${DO_APT_REMOVE}"; then
-		printf '### REMOVING NO LONGER REQUIRED PACKAGES ###\n'
-		DEBIAN_FRONTEND=noninteractive apt autoremove -y
-	fi
-	if test -n "${UNNEEDED_APT_PACKAGES}"; then
-		printf '### REMOVING UNNEEDED APT PACKAGES ###\n'
-		if test -n "${UNNEEDED_APT_PACKAGE_LINKS}"; then
-			for unneededAptPackageLink in ${UNNEEDED_APT_PACKAGE_LINKS}; do
-				if test -L "${unneededAptPackageLink}"; then
-					rm -f "${unneededAptPackageLink}"
-				fi
-			done
-		fi
-		DEBIAN_FRONTEND=noninteractive apt-get remove --purge -y ${UNNEEDED_APT_PACKAGES}
-	fi
+if test -z "$PHP_MODULES_TO_INSTALL"; then
+	exit 0
 fi
 
-docker-php-source delete
-rm -rf /tmp/pear
-rm -rf /var/lib/apt/lists/*
-rm -rf /tmp/src
+sortModulesToInstall
+
+if buildRequiredPackageLists $PHP_MAJMIN_VERSION $PHP_MODULES_TO_INSTALL; then
+	installRequiredPackages
+fi
+docker-php-source extract
+BUNDLED_MODULES="$(find /usr/src/php/ext -mindepth 2 -maxdepth 2 -type f -name 'config.m4' | xargs -n1 dirname | xargs -n1 basename | xargs)"
+for PHP_MODULE_TO_INSTALL in $PHP_MODULES_TO_INSTALL; do
+	if stringInList "$PHP_MODULE_TO_INSTALL" "$BUNDLED_MODULES"; then
+		installBundledModule $PHP_MAJMIN_VERSION "$PHP_MODULE_TO_INSTALL"
+	else
+		MODULE_SOURCE=''
+		MODULE_SOURCE_CONFIGOPTIONS=''
+		MODULE_SOURCE_CFLAGS=''
+		case "$PHP_MODULE_TO_INSTALL" in
+			cmark)
+				MODULE_SOURCE=https://github.com/krakjoe/cmark/archive/v1.0.0.tar.gz
+				cd "$(getPackageSource https://github.com/commonmark/cmark/archive/0.28.3.tar.gz)"
+				make install
+				cd -
+				MODULE_SOURCE_CONFIGOPTIONS=--with-cmark
+				;;
+			igbinary)
+				if test $PHP_MAJMIN_VERSION -lt 700; then
+					MODULE_SOURCE="https://github.com/igbinary/igbinary/archive/2.0.8.tar.gz"
+				else
+					MODULE_SOURCE="https://github.com/igbinary/igbinary/archive/3.0.1.tar.gz"
+				fi
+				MODULE_SOURCE_CONFIGOPTIONS=--enable-igbinary
+				MODULE_SOURCE_CFLAGS='-O2 -g'
+				;;
+		esac
+		if test -n "$MODULE_SOURCE"; then
+			installModuleFromSource "$PHP_MODULE_TO_INSTALL" "$MODULE_SOURCE" "$MODULE_SOURCE_CONFIGOPTIONS" "$MODULE_SOURCE_CFLAGS"
+		else
+			installPECLModule $PHP_MAJMIN_VERSION "$PHP_MODULE_TO_INSTALL"
+		fi
+	fi
+done
+cleanup
diff --git a/scripts/travisci-test-extensions b/scripts/travisci-test-extensions
index bf48a99..ec76f36 100755
--- a/scripts/travisci-test-extensions
+++ b/scripts/travisci-test-extensions
@@ -69,7 +69,7 @@ testExtension () {
 	testExtension_Image="$(getDockerImageName "${1}" "${2}")"
 	printf ' - Docker image: %s\n' "${testExtension_Image}"
 	testExtension_out=`mktemp`
-	if $(docker run --rm --volume "${TRAVIS_BUILD_DIR}:/app" --workdir /app "${testExtension_Image}" sh -c "./install-php-extensions --cleanup '${1}' && php ./scripts/check-installed-extension.php '${1}'" >"${testExtension_out}" 2>&1); then
+	if $(docker run --rm --volume "${TRAVIS_BUILD_DIR}:/app" --workdir /app "${testExtension_Image}" sh -c "./install-php-extensions '${1}' && php ./scripts/check-installed-extension.php '${1}'" >"${testExtension_out}" 2>&1); then
 		rm -rf "${testExtension_out}"
 		printf ' - Passed\n'
 		return 0