一、安装Docker CE
Docker有两个分支版本：Docker CE和Docker EE，即社区版和企业版
本教程基于CentOS 7安装Docker CE
1. 安装Docker的依赖库
[root@liza ~]# yum install -y yum-utils device-mapper-persistent-data lvm2
2. 添加Docker CE的软件源信息
[root@liza ~]# yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo Loaded plugins: fastestmirror adding repo from: http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo grabbing file http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo to /etc/yum.repos.d/docker-ce.repo repo saved to /etc/yum.repos.d/docker-ce.repo
3. 安装Docker CE
[root@liza ~]# yum makecache fast Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile base | 3.6 kB 00:00:00 docker-ce-stable | 3.5 kB 00:00:00 epel | 4.7 kB 00:00:00 extras | 2.9 kB 00:00:00 updates | 2.9 kB 00:00:00 (1/2): docker-ce-stable/x86_64/updateinfo | 55 B 00:00:00 (2/2): docker-ce-stable/x86_64/primary_db | 52 kB 00:00:00 Metadata Cache Created [root@liza ~]# yum -y install docker-ce
4. 启动Docker服务
[root@liza ~]# systemctl start docker
二、配置阿里云镜像仓库（镜像加速）
Docker的默认官方远程仓库是hub.docker.com，由于网络原因，下载一个Docker官方镜像可能会需要很长的时间，甚至下载失败
为此，阿里云容器镜像服务ACR提供了官方的镜像站点，从而加速官方镜像的下载下面介绍如何使用阿里云镜像仓库
1. 登录容器镜像服务控制台
登录成功页面如下。（若弹出开通服务窗口，关闭即可）
2. 单击【镜像中心】 > 【镜像加速器】，可以看到阿里云为您提供了一个专属的镜像加速地址
3. 配置Docker的自定义镜像仓库地址
[root@liza ~]# tee /etc/docker/daemon.json <<-'EOF' > { > "registry-mirrors": ["https://ktfoq759.mirror.aliyuncs.com"] > } > EOF { "registry-mirrors": ["https://ktfoq759.mirror.aliyuncs.com"] }
4. 重新加载服务配置文件
[root@liza ~]# systemctl daemon-reload
5. 重启Docker服务
[root@liza ~]# systemctl restart docker
三、使用Docker安装Nginx服务
1. 查看Docker镜像仓库中Nginx的可用版本
[root@liza ~]# docker search nginx NAME DESCRIPTION STARS OFFICIAL AUTOMATED nginx Official build of Nginx. 14291 [OK] jwilder/nginx-proxy Automated Nginx reverse proxy for docker con… 1941 [OK] richarvey/nginx-php-fpm Container running Nginx + PHP-FPM capable of… 801 [OK] linuxserver/nginx An Nginx container, brought to you by LinuxS… 139 jc21/nginx-proxy-manager Docker container for managing Nginx proxy ho… 132 tiangolo/nginx-rtmp Docker image with Nginx using the nginx-rtmp… 109 [OK] bitnami/nginx Bitnami nginx Docker Image 93 [OK] alfg/nginx-rtmp NGINX, nginx-rtmp-module and FFmpeg from sou… 86 [OK] jlesage/nginx-proxy-manager Docker container for Nginx Proxy Manager 82 [OK] nginxdemos/hello NGINX webserver that serves a simple page co… 65 [OK] nginx/nginx-ingress NGINX Ingress Controller for Kubernetes 46 privatebin/nginx-fpm-alpine PrivateBin running on an Nginx, php-fpm & Al… 44 [OK] nginxinc/nginx-unprivileged Unprivileged NGINX Dockerfiles 28 schmunk42/nginx-redirect A very simple container to redirect HTTP tra… 19 [OK] staticfloat/nginx-certbot Opinionated setup for automatic TLS certs lo… 16 [OK] centos/nginx-112-centos7 Platform for running nginx 1.12 or building … 15 nginx/nginx-prometheus-exporter NGINX Prometheus Exporter 15 centos/nginx-18-centos7 Platform for running nginx 1.8 or building n… 13 raulr/nginx-wordpress Nginx front-end for the official wordpress:f… 13 [OK] flashspys/nginx-static Super Lightweight Nginx Image 8 [OK] mailu/nginx Mailu nginx frontend 8 [OK] bitnami/nginx-ingress-controller Bitnami Docker Image for NGINX Ingress Contr… 7 [OK] bitwarden/nginx The Bitwarden nginx web server acting as a r… 7 ansibleplaybookbundle/nginx-apb An APB to deploy NGINX 2 [OK] wodby/nginx Generic nginx 1 [OK]
2. 拉取最新版的Nginx镜像
[root@liza ~]# docker pull nginx:latest latest: Pulling from library/nginx a076a628af6f: Pull complete 0732ab25fa22: Pull complete d7f36f6fe38f: Pull complete f72584a26f32: Pull complete 7125e4df9063: Pull complete Digest: sha256:10b8cc432d56da8b61b070f4c7d2543a9ed17c2b23010b43af434fd40e2ca4aa Status: Downloaded newer image for nginx:latest docker.io/library/nginx:latest
3. 查看本地镜像
[root@liza ~]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE nginx latest f6d0b4767a6c 44 hours ago 133MB
4. 运行容器
[root@liza ~]# docker run --name nginx-test -p 8080:80 -d nginx 47097e5b37b62b2ae2cd47a87df20ace66b62116c54d86e5da9e8add5800efba
命令参数说明：
- –name nginx-test：容器名称。
- -p 8080:80： 端口进行映射，将本地8080端口映射到容器内部的80端口。
- -d nginx： 设置容器在后台一直运行。