注意MacOS 和Linux 修改Docker 容器配置方式不一样
本文中 centos7.2 是容器名称
获取容器id
# docker inspect 容器id/容器name
$ docker inspect centos7.2 | grep Id
"Id": "c05fc37444df75bbf0f3277ee36b9997c8ef401568d7c5149bb4aca1c25160b2"
进入Docker终端
# 停止容器
docker stop centos7.2
# 进入docker终端
# 如果卡住，直接回车
screen ~/Library/Containers/com.docker.docker/Data/vms/0/tty
# 进入容器配置目录
$ cd /var/lib/docker/containers/c05fc37444df75bbf0f3277ee36b9997c8ef401568d7c5149bb4aca1c25160b2
# 容器配置目录文件
$ ls
c05fc37444df75bbf0f3277ee36b9997c8ef401568d7c5149bb4aca1c25160b2-json.log
checkpoints
config.v2.json
hostconfig.json
hostname
hosts
mounts
resolv.conf
resolv.conf.hash
docker-desktop:/var/lib/docker/containers/c05fc37444df75bbf0f3277ee36b9997c8ef401568d7c5149bb4aca1c25160b2
# 退出终端
# `ctrl+a+k`退出终端，输入y
修改端口配置
1、hostconfig.json 添加端口绑定
vi hostconfig.json
# 搜索关键字
/PortBindings
"PortBindings":{"8080/tcp":[{"HostIp":"","HostPort":"8082"}]}
# 修改为 相当于运行参数 -p 8086:3306
"PortBindings":{"8080/tcp":[{"HostIp":"","HostPort":"8082"}], "3306/tcp":[{"HostIp":"","HostPort":"8086"}]}
2、config.v2.json 加上要暴露的端口
vi config.v2.json
# 搜索关键字
/ExposedPorts
"ExposedPorts":{"8080/tcp":{}}
# 修改为
"ExposedPorts":{"8080/tcp":{}, "3306/tcp":{}}
说明：
8080/tcp是容器端口"HostPort":"8082"是宿主主机端口，就是MacOS的端口
重启docker（重要，让docker重新读容器的取配置文件）
# 启动容器
$ docker start centos7.2
# 再次查看端口映射，已经生效了
$ docker port centos7.2
3306/tcp -> 0.0.0.0:8086
8080/tcp -> 0.0.0.0:8082
