测试环境：CentOS 7.9

Steps

  1. 停止当前容器。作为示例，wp是我要修改端口映射的容器名称。

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    $ docker container stop wp

  2. 停止Docker服务

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    $ systemctl stop docker

  3. 找到容器的HASH ID

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    $ docker inspect wp
    [root@l2m2 ~]# docker inspect wp
    [
        {
            "Id": "547ecaa980a4be72120176fddc580c4fd3526a3c08831e016f996c01be36d846",
            "Created": "2022-12-06T06:49:30.380291936Z",
            "Path": "docker-entrypoint.sh",
            "Args": [
                "apache2-foreground"
            ],

    HASH ID为547ecaa980a4be72120176fddc580c4fd3526a3c08831e016f996c01be36d846

  4. 修改文件 /var/lib/docker/containers/[hash_of_the_container]/hostconfig.json

    找到PortBindings，修改映射端口。

  5. 重启Docker服务

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    $ systemctl restart docker

  6. 启动容器

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    $ docker start wp