feat: Adds env file to services.

compose.yaml

@@ -6,6 +6,7 @@ services:
       - backend
     volumes:
       - db-data:/var/lib/postgresql/data
+    env_file: .env
     environment:
       - POSTGRES_PASSWORD=${POSTGRES_PASSWORD}
     healthcheck:
@@ -61,6 +62,7 @@ services:
     networks:
       - backend
       - proxy
+    env_file: .env
     environment:
       - TMPDIR=/var/lib/plausible/tmp
       # required: https://github.com/plausible/community-edition/wiki/configuration#required