Docker 06 部署Nginx
部署 Nginx 可以参考 Docker Hub 官方文档：https://hub.docker.com/_/nginx
1、下载镜像
docker pull nginx
[root@sail home]# docker pull nginx
Using default tag: latest
latest: Pulling from library/nginx
e5ae68f74026: Pull complete
21e0df283cd6: Pull complete
ed835de16acd: Pull complete
881ff011f1c9: Pull complete
77700c52c969: Pull complete
44be98c0fab6: Pull complete
Digest: sha256:9522864dd661dcadfd9958f9e0de192a1fdda2c162a35668ab6ac42b465f0603
Status: Downloaded newer image for nginx:latest
docker.io/library/nginx:latest
2、查看镜像
docker images
[root@sail home]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
nginx latest f652ca386ed1 7 days ago 141MB
3、运行镜像
docker run -d --name=nginx01 -p 3344:80 nginx
[root@sail home]# docker run -d --name=nginx01 -p 3344:80 nginx
f58fb3ed8c5587d2c28567c865759438e449f2fd65889f2910286b9cd74debec
[root@sail home]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
f58fb3ed8c55 nginx "/docker-entrypoint.…" 23 seconds ago Up 22 seconds 0.0.0.0:3344->80/tcp nginx01
4、测试验证
使用 curl 命令可以模拟网页访问，以此来测试 Nginx 启动情况。
[root@sail home]# curl localhost:3344
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
html { color-scheme: light dark; }
body { width: 35em; margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif; }
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>
<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p>
</body>
</html>
5、外网访问测试
如果是使用阿里云服务器，需要先开启端口。
使用阿里云的公网 IP 即可进行访问。
出现此页面，即代表 Nginx 部署成功。
查看启动的容器：
[root@sail home]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
f58fb3ed8c55 nginx "/docker-entrypoint.…" 12 minutes ago Up 12 minutes 0.0.0.0:3344->80/tcp nginx01
查看容器中 Nginx 目录：
[root@sail home]# docker exec -it nginx01 /bin/bash
root@f58fb3ed8c55:/# whereis nginx
nginx: /usr/sbin/nginx /usr/lib/nginx /etc/nginx /usr/share/nginx
root@f58fb3ed8c55:/# cd /etc/nginx
root@f58fb3ed8c55:/etc/nginx# ls
conf.d fastcgi_params mime.types modules nginx.conf scgi_params uwsgi_params
如此，如果需要修改 Nginx 的配置即可修改 nginx.conf 文件实现。
不过如果每次修改都要进入容器后再进行操作，是很繁琐的事，还是更推荐使用容器卷技术。
详情见：Docker 12 数据卷
部署原理
参考
https://www.bilibili.com/video/BV1og4y1q7M4?spm_id_from=333.999.0.0
https://www.bilibili.com/video/BV1kv411q7Qc?spm_id_from=333.999.0.0
版本
CentOS 7.6
Docker 20.10.11
天河有尽身作涯，星海无边前是岸。
