golang远程操作docker

本文讲述golang远程操作docker的方法，用到的库
go get github.com/docker/docker/client
由于本机内存不够，不得已只能远程连接docker
先找到要修改的文件位置：locate docker.service
修改部分如下

ExecStart=/usr/bin/dockerd $DOCKER_OPTS -H unix:///var/run/docker.sock -H tcp://0.0.0.0:端口

加载配置：

$systemctl daemon-reload
$systemctl restart docker.service

上代码：
开启一个mongo容器，打印端口映射，并在10s后删除的示例

package main

import (
	"context"
	"fmt"
	"github.com/docker/docker/api/types"
	"github.com/docker/docker/api/types/container"
	"github.com/docker/docker/client"
	"github.com/docker/go-connections/nat"
	"time"
)

func main() {
	c, err := client.NewClientWithOpts(client.WithHost("tcp://IP:Port"))

	ctx := context.Background()
	rsp,err := c.ContainerCreate(ctx, &container.Config{
		ExposedPorts:    nat.PortSet{
			"27017/tcp": {},
		},
		Image:           "mongo:latest",
	},&container.HostConfig{
		PortBindings:    nat.PortMap{
			"27017/tcp": []nat.PortBinding{
				{
					HostIP: "0.0.0.0",
					HostPort: "0",
				},
			},
		},

	},nil,nil,"")
	if err != nil {
		panic(err)
	}
	err = c.ContainerStart(ctx, rsp.ID, types.ContainerStartOptions{})
	if err != nil {
		panic(err)
	}
	defer func() {
		err := c.ContainerRemove(ctx,rsp.ID,types.ContainerRemoveOptions{
			Force: true,
		})
		if err != nil {
			panic(err)
		}
		fmt.Println("container killed")
	}()

	inspRes, err := c.ContainerInspect(ctx,rsp.ID)
	if err != nil {
		panic(err)
	}
	hostPost := inspRes.NetworkSettings.Ports["27017/tcp"][0]
	fmt.Println(hostPost.HostPort)

	fmt.Println("container started")
	time.Sleep(time.Second * 10)
	fmt.Println("killing container")
}

参考：https://zhuanlan.zhihu.com/p/360242317