refactor: create DockerfileTest with hot-reload support and volume mounts

- Rename Dockerfile to DockerfileTest for development variant
- Remove poetry.lock from COPY (regenerated during build)
- Add --reload flag to uvicorn for development
- Add src volume mount in docker-compose for hot-reload
- Update docker-compose to use DockerfileTest

docker-compose.yaml

@@ -21,12 +21,14 @@ services:
   naliia_bot:
     build:
       context: .
-      dockerfile: Dockerfile
+      dockerfile: DockerfileTest
     ports:
       - "8010:8010"
     depends_on:
       messages_db:
         condition: service_healthy
+    volumes:
+      - ./src:/app/src
     env_file:
       - .env
     environment:
@@ -44,3 +46,4 @@ services:
 
 volumes:
   data:
+  src: