Docker

快速开始

Install Docker Engine on Ubuntu

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关于 Dockerfile 中 echo 的用法

docker 挂载数据卷

Warning: Stopping docker.service, but it can still be activated by: docker.socket

远程访问

https://docs.docker.com/config/daemon/remote-access/#configuring-remote-access-with-systemd-unit-file

方式一

• /etc/systemd/system/multi-user.target.wants/docker.service

  ExecStart=/usr/bin/dockerd -H fd:// -H unix:///var/run/docker.sock -H tcp://0.0.0.0:2375
  

方式二

• /etc/systemd/system/multi-user.target.wants/docker.service

  ExecStart=/usr/bin/dockerd
  

• /etc/docker/daemon.json

  {
    "data-root": "/opt/data/docker",
    "registry-mirrors": ["https://uwk49ut2.mirror.aliyuncs.com"],
    "hosts": ["unix:///var/run/docker.sock", "tcp://0.0.0.0:2375"]
  }
  

注意项

访问指令只能选择一处进行配置，否则会报错：

unable to configure the Docker daemon with file /etc/docker/daemon.json: the following directives are specified both as a flag and in the configuration file: hosts: (from flag: [fd:// unix:///var/run/docker.sock], from file: [tcp://0.0.0.0:2375])

测试

sudo daemon-reload

sudo systemctl restart docker

sudo netstat -lntp | grep dockerd

常用命令

• 删除已停止的容器

  docker rm $(docker ps -a | grep Exited | awk '{print $1}')
  

• 获取最新镜像版本号

  VERSION=$(docker image ls | grep 'nginx' | awk '{print $2}' | sort -r | head -n 1)
  

• 自动清理空间

  docker system prune
  

• 查看占用

  docker system df