feat(worker): Add db_worker service with automatic restart and logging

feat(task_overview): Display generated series in task overview
docs(README): Update documentation for background task workers and troubleshooting

docker/docker-compose.dev.yml

@@ -17,6 +17,20 @@ services:
       - ../:/usr/src/app:cached
       # Mount the app log directory so logs are visible on the host at ./logs
       - ../logs:/var/log/rad
+
+  worker:
+    env_file:
+      - ../.env.dev
+    volumes:
+      - ../:/usr/src/app:cached
+      - ../logs:/var/log/rad
+    entrypoint:
+      [
+        "sh",
+        "-c",
+        "python manage.py migrate --noinput && exec python manage.py db_worker",
+      ]
+    command: []
   nginx:
     # Development nginx override: mount a simplified config that does not
     # reference LetsEncrypt certs so the container can start without real

docker/docker-compose.local.yml

@@ -30,6 +30,23 @@ services:
       - 3459:3459
     env_file:
       - ./.env.dev.local
+
+  worker:
+    build:
+      context: ..
+      dockerfile: rad/Dockerfile
+    command: python manage.py db_worker
+    restart: unless-stopped
+    volumes:
+      - ../:/usr/src/app
+      - ../backups:/usr/src/app/backups
+      - ../media:/usr/src/app/media
+      - ../static:/usr/src/app/static
+    env_file:
+      - ./.env.dev.local
+    depends_on:
+      - web
+      - db
   db:
     image: postgres:14.2-alpine
     volumes:

docker/docker-compose.prod.yml

@@ -35,6 +35,30 @@ services:
       - "8000"
     command: ["/usr/src/app/entrypoint.sh"]
 
+  worker:
+    build:
+      context: ..
+      dockerfile: rad/Dockerfile.prod
+    restart: always
+    env_file:
+      - ../.env.${COMPOSE_ENV:-prod}
+    environment:
+      - DJANGO_SETTINGS_MODULE=rad.settings
+    depends_on:
+      redis:
+        condition: service_healthy
+      web:
+        condition: service_started
+    volumes:
+      - ../deploy/settings_local.py:/usr/src/app/rad/settings_local.py:ro
+      - ../logs:/var/log/rad:rw
+    entrypoint:
+      [
+        "sh",
+        "-c",
+        "python manage.py migrate --noinput && exec python manage.py db_worker",
+      ]
+
   nginx:
     image: nginx:stable-alpine
     restart: always