Feat: mcp server (#7084)

### What problem does this PR solve?

Add MCP support with a client example.

Issue link: #4344

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

docker/docker-compose.yml

@@ -8,6 +8,13 @@ services:
       mysql:
         condition: service_healthy
     image: ${RAGFLOW_IMAGE}
+    # example to setup MCP server
+    # command:
+    #   - --enable-mcpserver
+    #   - --mcp-host=0.0.0.0
+    #   - --mcp-port=9382
+    #   - --mcp-base-url=http://127.0.0.1:9380
+    #   - --mcp-script-path=/ragflow/mcp/server/server.py
     container_name: ragflow-server
     ports:
       - ${SVR_HTTP_PORT}:9380
@@ -15,6 +22,7 @@ services:
       - 443:443
       - 5678:5678
       - 5679:5679
+      - 9382:9382 # entry for MCP (host_port:docker_port). The docker_port should match with the value you set for `mcp-port` above
     volumes:
       - ./ragflow-logs:/ragflow/logs
       - ./nginx/ragflow.conf:/etc/nginx/conf.d/ragflow.conf