1. 构建 Docker 镜像

构建镜像需要在robustmq根目录构建

• 构建 placement center 镜像

    docker build --target placement-center -t placement-center-test:0.1 .

• 构建 mqserver 镜像

    docker build --target mqserver -t mqserver-test:0.1 .

2. docker 运行

```shell
cd ./example/test-network-docker
docker-compose -f compose/compose-test-net.yaml up
```

3. 验证 MQTT 功能是否正常

查看文档执行测试：MQTT 功能测试

4. 出现的问题怎么解决

4.1 出现Not found leader这种问题是因为 placement-center 集群的数据有问题，需要清理掉 volumes

 mqtt-server-node-1       | thread 'main' panicked at src/mqtt-broker/src/handler/cache.rs:523:17:
 mqtt-server-node-1       | Not found leader
 mqtt-server-node-1       | note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
 mqtt-server-node-1 exited with code 101

解决办法
```console
% docker volume ls
DRIVER    VOLUME NAME
local     compose_mqtt-server-node-1-data
local     compose_mqtt-server-node-2-data
local     compose_mqtt-server-node-3-data
local     compose_placement-center-node-1-data
local     compose_placement-center-node-2-data
local     compose_placement-center-node-3-data

% docker volume rm compose_mqtt-server-node-1-data compose_placement-center-node-1-data compose_placement-center-node-2-data compose_placement-center-node-3-data
```