docker, docker-compose安装和使用

官方文档：

安装docker: 

https://docs.docker.com/install/linux/docker-ce/centos/

安装docker-compose:

https://docs.docker.com/compose/install/

# 所有docker命令映射都是：local:container

# create container
docker run --name <name> -p 123:123 -d <image> -v local_path:container_path

# if failed, see logs
docker logs <name/id>

# see how many docker containers
docker ps -a

# see networks
docker network ls

# see network detail
docker network inspect <name/id>

# enter a container
docker exec -ti <name/id> bash

# start docker after rebooting
docker start <name/id>

# check status
docker stats [name/id]

# delete container
docker rm <name/id>

docker container rm $(docker container ls -a -q)         # Remove all containers

# image
docker build 

docker image ls -a                             # List all images on this machine
docker image rm <image id>            # Remove specified image from this machine
docker image rm $(docker image ls -a -q)   # Remove all images from this machine
docker login             # Log in this CLI session using your Docker credentials
docker tag <image> username/repository:tag  # Tag <image> for upload to registry
docker push username/repository:tag            # Upload tagged image to registry
docker run username/repository:tag                   # Run image from a registry

# 4.删除images，通过image的id来指定删除谁

docker rmi <image id>

# 想要删除untagged images，也就是那些id为<None>的image的话可以用

docker rmi $(docker images | grep "^<none>" | awk "{print $3}")

# 要删除全部image的话

docker rmi $(docker images -q)

docker run 命令解析：
https://www.runoob.com/docker/docker-run-command.html

学习：
https://docs.docker.com/get-started/part3/

docker-compose.yaml例子

version: '3'
services:
    nginx:
        image: nginx:latest
        # 端口映射
        ports:
            - "80:80"
        # 依赖关系 先跑php
        depends_on:
            - "php"
        # 数据卷
        volumes:
            # 映射主机./conf.d目录到容器/etc/nginx/conf.d目录
            - "$PWD/conf.d:/etc/nginx/conf.d"
            - "$PWD/html:/usr/share/nginx/html"
        networks:
            - app_net
        # 容器名称
        container_name: "compose-nginx"
    php:
        build: ./php-mysqli
        # image指定build Dockerfile生成镜像的名称
        image: php:7.2-fpm-mysqli
        ports:
            - "9000:9000"
        volumes:
            - "$PWD/html:/var/www/html"
        networks:
            - app_net
        container_name: "compose-php"
    mysql:
        image: mysql:5.7
        ports:
            - "3306:3306"
        # 环境变量
        environment:
            # mysql密码
            - MYSQL_ROOT_PASSWORD={自己填密码}
        networks:
            app_net:
                # 固定子网ip，网段必须在子网络10.10.*.*
                ipv4_address: 10.10.10.1
        container_name: "compose-mysql"
networks:
    # 配置docker network
    app_net:
        driver: bridge
        ipam:
            config:
                # 子网络
                - subnet: 10.10.0.0/16

docker-compose up