feat(docker): add migrate-config service for database migrations

* Include amcs-migrate-config binary in Docker image
* Document migration commands in README

docker-compose.yml

@@ -36,6 +36,18 @@ services:
     ports:
       - "8080:8080"
 
+  migrate-config:
+    build:
+      context: .
+    profiles: ["tools"]
+    restart: "no"
+    volumes:
+      - ./configs:/app/configs
+    environment:
+      AMCS_CONFIG: /app/configs/docker.yaml
+    entrypoint: ["/app/amcs-migrate-config"]
+    command: ["--config", "/app/configs/docker.yaml", "--dry-run"]
+
 volumes:
   postgres_data: