diff --git a/Dockerfile b/Dockerfile
index b2b0c1a..09c662a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,8 @@
-FROM bash
+FROM bash AS build
 
-COPY install-php-extensions /usr/bin/install-php-extensions
-RUN chmod +x /usr/bin/install-php-extensions
+COPY install-php-extensions /tmp/install-php-extensions
+RUN chmod +x /tmp/install-php-extensions
+
+FROM scratch
+
+COPY --from=build /tmp/install-php-extensions /usr/bin/install-php-extensions