Set env files explicitly

docker-compose.development.yml

@@ -7,10 +7,9 @@ volumes:
 services:
   db:
     env_file: ./.development.env
+
   celery:
     env_file: ./.development.env
-    environment:
-      - DJANGO_SETTINGS_MODULE=newsreader.conf.docker
     volumes:
       - ./src/:/app/src
 
@@ -19,8 +18,6 @@ services:
       target: development
     command: python /app/src/manage.py runserver 0.0.0.0:8000
     env_file: ./.development.env
-    environment:
-      - DJANGO_SETTINGS_MODULE=newsreader.conf.docker
     ports:
       - "${DJANGO_PORT:-8000}:8000"
     volumes:

docker-compose.production.yml

@@ -5,13 +5,23 @@ volumes:
   static-files:
 
 services:
+  db:
+    env_file: ./.production.env
+
+  celery:
+    env_file: ./.production.env
+
+  django:
+    env_file: ./.production.env
+
   nginx:
     image: nginx:1.23
     depends_on:
       django:
         condition: service_healthy
-    env_file: ./.env
+    env_file: ./.production.env
     ports:
+      # Note that --env-file should be used to set these correctly
       - "${NGINX_HTTP_PORT:-80}:80"
     volumes:
       - ./config/nginx/conf.d:/etc/nginx/conf.d

docker-compose.yml

@@ -10,11 +10,11 @@ services:
   db:
     image: postgres:15
     healthcheck:
-      test: /usr/bin/pg_isready
+      # Note that --env-file should be used to set these correctly
+      test: /usr/bin/pg_isready --username="${POSTGRES_USER}" --dbname="${POSTGRES_DB}"
       interval: 5s
       timeout: 10s
       retries: 10
-    env_file: ./.env
     volumes:
       - postgres-data:/var/lib/postgresql/data
 
@@ -39,7 +39,7 @@ services:
         POSTGRES_USER:
         POSTGRES_PASSWORD:
         DJANGO_SECRET_KEY:
-        DJANGO_SETTINGS_MODULE: "newsreader.conf.production"
+        DJANGO_SETTINGS_MODULE:
     command: |
       celery worker -n worker1@%h
       -n worker2@%h
@@ -49,9 +49,6 @@ services:
       --workdir /app/src/
       --beat
       --scheduler django
-    env_file: ./.env
-    environment:
-      - DJANGO_SETTINGS_MODULE=newsreader.conf.production
     depends_on:
       rabbitmq:
         condition: service_started
@@ -76,7 +73,7 @@ services:
         POSTGRES_USER:
         POSTGRES_PASSWORD:
         DJANGO_SECRET_KEY:
-        DJANGO_SETTINGS_MODULE: "newsreader.conf.production"
+        DJANGO_SETTINGS_MODULE:
     entrypoint: /app/bin/docker-entrypoint.sh
     command: |
       gunicorn --bind 0.0.0.0:8000
@@ -88,9 +85,6 @@ services:
       interval: 30s
       timeout: 10s
       retries: 10
-    env_file: ./.env
-    environment:
-      - DJANGO_SETTINGS_MODULE=newsreader.conf.production
     depends_on:
       memcached:
         condition: service_started