Docker简单使用

　　

1.安装

yum install docker #centos
apt install docker #ubuntu

2.启动docker

sudo systemctl start docker

3.修改国内源

vim /etc/docker/daemon.json
{
　　"registry-mirrors": ["https://registry.docker-cn.com"]
} 

改完后重启docker

systemctl restart docker

4.查找docker镜像
#以httpd为例

docker search httpd

结果如下

INDEX NAME DESCRIPTION STARS OFFICIAL AUTOMATED
docker.io docker.io/httpd The Apache HTTP Server Project 1796 [OK]
docker.io docker.io/hypriot/rpi-busybox-httpd Raspberry Pi compatible Docker Image with ... 41
docker.io docker.io/centos/httpd 18 [OK]
docker.io docker.io/centos/httpd-24-centos7 Platform for running Apache httpd 2.4 or b... 13
docker.io docker.io/armhf/httpd The Apache HTTP Server Project 8
docker.io docker.io/macadmins/netboot-httpd use in combination with bruienne/bsdpy 6 [OK]
docker.io docker.io/lolhens/httpd Apache httpd 2 Server 2 [OK]
docker.io docker.io/salim1983hoop/httpd24 Dockerfile running apache config 2 [OK]
docker.io docker.io/epflidevelop/os-wp-httpd WP httpd 1 [OK]
docker.io docker.io/fboaventura/dckr-httpd Small footprint http server to use with ot... 1 [OK]
docker.io docker.io/lead4good/httpd-fpm httpd server which connects via fcgi proxy... 1 [OK]
docker.io docker.io/rgielen/httpd-image-simple Docker image for simple Apache httpd based... 1 [OK]
docker.io docker.io/tplatform/aws-linux-httpd24-php70 aws-linux-httpd24-php70 1 [OK]
docker.io docker.io/tplatform/aws-linux-httpd24-php71-fpm aws-linux-httpd24-php71-fpm 1 [OK]
docker.io docker.io/amd64/httpd The Apache HTTP Server Project 0
docker.io docker.io/buzzardev/httpd Based on the official httpd image 0 [OK]
docker.io docker.io/cilium/demo-httpd 0
docker.io docker.io/dockerpinata/httpd 0
docker.io docker.io/interlutions/httpd httpd docker image with debian-based confi... 0 [OK]
docker.io docker.io/manageiq/httpd Container with httpd, built on CentOS for ... 0 [OK]
docker.io docker.io/manasip/httpd 0
docker.io docker.io/ppc64le/httpd The Apache HTTP Server Project 0
docker.io docker.io/publici/httpd httpd:latest 0 [OK]
docker.io docker.io/tplatform/aws-linux-httpd24-php71 aws-linux-httpd24-php71 0 [OK]
docker.io docker.io/trollin/httpd

5.拉取镜像
#以httpd为例

docker pull docker.io/centos/httpd

也可简化为

docker pull centos/httpd

 

但是不能是

docker pull httpd

httpd和centos/httpd是两个镜像

6.查看镜像

docker images

 

7.运行容器

docker run [OPTIONS] IMAGE [COMMAND] [ARG...]

8.容器改名
容器名称可以在run的时候使用参数--name来设定

docker rename old_container_name new_container_name

9.启动/重启/停止容器

docker start/restart/stop container_id/container_name

10.查看容器
查看正在使用的容器

docker ps

查看所有容器

docker ps -a

11.删除容器

docker rm container_id/container_name

如果有正在运行的容器，可以加上-f强制删除

docker rm container_id/container_name

12.修改docker的端口映射
查看需要修改的容器，记住container id
docker ps -a
停止容器
docker stop xxx
修改容器的端口映射配置文件

vim /var/lib/docker/containers/{container_id}/hostconfig.json

"PortBindings": {
　　"80/tcp": [
　　　　{
　　　　　　"HostIp": "",
　　　　　　"HostPort": "8080"//宿主机端口
　　　　}
　　]
},

重启docker服务

service docker restart

启动容器

docker start xxx

停止容器

docker stop xxx