From 871bd889747dd9332be5f6d3f644442048f957e9 Mon Sep 17 00:00:00 2001
From: Michele Locati <michele@locati.it>
Date: Thu, 26 Aug 2021 10:16:44 +0200
Subject: [PATCH] Describe how you can see the distribution name and version

---
 README.md | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/README.md b/README.md
index 53d29cf..ef62023 100644
--- a/README.md
+++ b/README.md
@@ -310,6 +310,24 @@ Some extensions have special requirements:
 | <a name="special-requirements-for-vips"></a>vips | &bull; Not available in `alpine3.7` docker images<br />&bull; Not available in `alpine3.8` docker images<br />&bull; Not available in `alpine3.9` docker images<br />&bull; Not available in `jessie` docker images |
 <!-- END OF SPECIAL REQUIREMENTS -->
 
+### How do I know which Linux distribution I am using?
+
+You can run this command:
+
+```sh
+cat /etc/os-release
+```
+
+For example:
+- for Debian 11 (Bullseye) you'll see:
+  ```sh
+  PRETTY_NAME="Debian GNU/Linux 11 (bullseye)"
+  ```
+- for Alpine Linux 3.14 you'll see:
+  ```sh
+  PRETTY_NAME="Alpine Linux v3.14"
+  ```
+
 ## Tests
 
 When submitting a pull request, a [GitHub Action](https://github.com/mlocati/docker-php-extension-installer/blob/master/.github/workflows/test-extensions.yml) is executed to check if affected PHP extensions actually work (see below).