Support specific version

Dockerfile

@@ -39,8 +39,11 @@ RUN composer global require "hirak/prestissimo:^0.3" --prefer-dist --no-progress
 ARG STABILITY=stable
 ENV STABILITY ${STABILITY}
 
+# Allow to select skeleton version
+ARG VERSION=""
+
 # Download the Symfony skeleton and leverage Docker cache layers
-RUN composer create-project "symfony/skeleton" . --stability=$STABILITY --prefer-dist --no-dev --no-progress --no-scripts --no-plugins --no-interaction
+RUN composer create-project "symfony/skeleton ${VERSION}" . --stability=$STABILITY --prefer-dist --no-dev --no-progress --no-scripts --no-plugins --no-interaction
 
 ###> recipes ###
 ###< recipes ###

docker-compose.yaml

@@ -4,6 +4,9 @@ services:
   app:
     build:
       context: .
+      args:
+        VERSION: ${SYMFONY_VERSION}
+        STABILITY: stable
     volumes:
       # Comment out the next line in production
       - ./:/srv/app:rw

docker/app/docker-entrypoint.sh

@@ -9,7 +9,7 @@ fi
 if [ "$1" = 'php-fpm' ] || [ "$1" = 'bin/console' ]; then
     # The first time volumes are mounted, the project needs to be recreated
     if [ ! -f composer.json ]; then
-        composer create-project "symfony/skeleton" tmp --stability=$STABILITY --prefer-dist --no-progress --no-interaction
+        composer create-project "symfony/skeleton $VERSION" tmp --stability=$STABILITY --prefer-dist --no-progress --no-interaction
         cp -Rp tmp/. .
         rm -Rf tmp/
     elif [ "$APP_ENV" != 'prod' ]; then