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.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