Add .env

.env

@@ -0,0 +1 @@
+PHP_VERSIONS=7.2 7.1 # Set this without quotes!

docker-compose.yaml

@@ -14,7 +14,7 @@ services:
     image: eroncero/multi-php-fpm
     restart: unless-stopped
     environment:
-      - PHP_VERSIONS=7.2 7.1
+      - PHP_VERSIONS=${PHP_VERSIONS}  # Inherits from .env
     volumes:
       - ./multi-php-fpm/etc/php:/etc/php
       - ./multi-php-fpm/run/php:/run/php

multi-php-fpm/project/entrypoint/install-php-versions.sh

@@ -1,6 +1,9 @@
 #!/bin/sh
 set -e
 
+export DEBIAN_FRONTEND=noninteractive
+export DEBCONF_NONINTERACTIVE_SEEN=true
+
 apt-get update
 
 for version in $PHP_VERSIONS; do