Allow setting Postgres through env variables while using Compose

Author: janklan

docker-compose.yml

@@ -1,10 +1,11 @@
 services:
   postgres:
-    image: postgres:17
+    image: postgres:${POSTGRES_VERSION:-17}
     environment:
-      POSTGRES_USER: postgres
-      POSTGRES_PASSWORD: postgres
-      POSTGRES_DB: postgres_doctrine_test
+      POSTGRES_USER: ${POSTGRES_USER:-postgres}
+      POSTGRES_PORT: ${POSTGRES_USER:-5432}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-postgres}
+      POSTGRES_DB: ${POSTGRES_DB:-postgres_doctrine_test}
     ports:
       - "5432:5432"
     volumes: