docker安装nginx，挂载配置文件到主机目录

下面命令的意思是从镜像仓库拉取最新的nginx镜像，并启动一个nginx容器，这个容器的名字叫mynginx，并把容器内部的80端口映射到主机的8080端口。

docker run --name mynginx -d -p 8080:80 nginx

通过docker ps查看容器运行状态

 docker ps 

以交互式的方法进到容器内部，查询容器的内部结构

docker exec -it mynginx /bin/bash

通过下面操作讲index.html修改为this is my nginx，访问页面发现修改生效

root@b9a3191eef22:/# cd usr/share/nginx/html/
root@b9a3191eef22:/usr/share/nginx/html# echo "this is my nginx" >index.html

[root@iZm5e8xpme70yxqoa4zoydZ html]# docker run --name mynginx -d -p 8080:80 nginx
b9a3191eef22a778a71bbf4029a5e4092c5287e0e0e2ac9a4b04de03f9f879ce
[root@iZm5e8xpme70yxqoa4zoydZ html]# docker ps 
ConTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                               NAMES
b9a3191eef22        nginx               "/docker-entrypoint.…"   18 seconds ago      Up 17 seconds       0.0.0.0:8080->80/tcp                mynginx
[root@iZm5e8xpme70yxqoa4zoydZ html]# docker exec -it mynginx /bin/bash
root@b9a3191eef22:/# ls -lrt
total 80
dr-xr-xr-x  12 root root    0 Mar 22  2021 sys
drwxr-xr-x   2 root root 4096 Oct  3 09:00 home
drwxr-xr-x   2 root root 4096 Oct  3 09:00 boot
drwxr-xr-x   1 root root 4096 Oct 11 00:00 var
drwxr-xr-x   1 root root 4096 Oct 11 00:00 usr
drwxr-xr-x   2 root root 4096 Oct 11 00:00 srv
drwxr-xr-x   2 root root 4096 Oct 11 00:00 sbin
drwx------   2 root root 4096 Oct 11 00:00 root
drwxr-xr-x   2 root root 4096 Oct 11 00:00 opt
drwxr-xr-x   2 root root 4096 Oct 11 00:00 mnt
drwxr-xr-x   2 root root 4096 Oct 11 00:00 media
drwxr-xr-x   2 root root 4096 Oct 11 00:00 lib64
drwxr-xr-x   2 root root 4096 Oct 11 00:00 bin
-rwxrwxr-x   1 root root 1202 Oct 12 02:03 docker-entrypoint.sh
drwxr-xr-x   1 root root 4096 Oct 12 02:03 lib
drwxrwxrwt   1 root root 4096 Oct 12 02:03 tmp
drwxr-xr-x   1 root root 4096 Oct 12 02:03 docker-entrypoint.d
drwxr-xr-x   1 root root 4096 Oct 29 02:45 etc
dr-xr-xr-x 101 root root    0 Oct 29 02:45 proc
drwxr-xr-x   5 root root  340 Oct 29 02:45 dev
drwxr-xr-x   1 root root 4096 Oct 29 02:45 run
root@b9a3191eef22:/# cd usr/share/nginx/html/
root@b9a3191eef22:/usr/share/nginx/html# echo "this is my nginx" >index.html
root@b9a3191eef22:/usr/share/nginx/html# exit
exit

第一步：先通过下面命令建立目录

mkdir -p /home/app/nginx/html
mkdir -p /home/app/nginx/log

第二步：通过docker cp将启动的nginx容器中的配置文件拷贝到主机的对应目录

docker cp mynginx:/etc/nginx/nginx.conf /home/app/nginx/nginx.conf
docker cp mynginx:/etc/nginx/conf.d/ /home/app/nginx/conf.d/

第一步：先通过下面停止容器

docker stop mynginx

第二步：删除容器

docker rm mynginx

第三步：通过挂载方式启动容器

docker run --name mynginx -v /home/app/nginx/html:/usr/share/nginx/html -v /home/app/nginx/conf.d:/etc/nginx/conf.d -v /home/app/nginx/log:/var/log/nginx -v /home/app/nginx/nginx.conf:/etc/nginx/nginx.conf  -d -p 8080:80 nginx

第四步：进到主机目录修改index.html为this is big message，访问页面发现生效

下面是具体操作方法

[root@iZm5e8xpme70yxqoa4zoydZ html]# mkdir -p /home/app/nginx/html
[root@iZm5e8xpme70yxqoa4zoydZ html]# mkdir -p /home/app/nginx/log
[root@iZm5e8xpme70yxqoa4zoydZ nginx]# docker cp mynginx:/etc/nginx/nginx.conf /home/app/nginx/nginx.conf
[root@iZm5e8xpme70yxqoa4zoydZ nginx]# docker cp mynginx:/etc/nginx/conf.d/ /home/app/nginx/conf.d/
[root@iZm5e8xpme70yxqoa4zoydZ conf.d]# cd /home/app/nginx/
[root@iZm5e8xpme70yxqoa4zoydZ nginx]# ls
conf.d  html  log  nginx.conf
[root@iZm5e8xpme70yxqoa4zoydZ nginx]# ll
total 16
drwxr-xr-x 2 root root 4096 Oct 29 10:56 conf.d
drwxr-xr-x 2 root root 4096 Oct 29 10:29 html
drwxr-xr-x 2 root root 4096 Oct 29 10:29 log
-rw-r--r-- 1 root root  648 Sep  7 23:38 nginx.conf
[root@iZm5e8xpme70yxqoa4zoydZ nginx]# docker stop mynginx
mynginx
[root@iZm5e8xpme70yxqoa4zoydZ nginx]# docker rm mynginx
mynginx
[root@iZm5e8xpme70yxqoa4zoydZ nginx]# docker run --name mynginx -v /home/app/nginx/html:/usr/share/nginx/html -v /home/app/nginx/conf.d:/etc/nginx/conf.d -v /home/app/nginx/log:/var/log/nginx -v /home/app/nginx/nginx.conf:/etc/nginx/nginx.conf  -d -p 8080:80 nginx
c2363eaf2fff30773be934187c0e6995561d1abd96ba661c0b01b225e0da56ca
[root@iZm5e8xpme70yxqoa4zoydZ nginx]# ll
total 16
drwxr-xr-x 2 root root 4096 Oct 29 10:56 conf.d
drwxr-xr-x 2 root root 4096 Oct 29 10:29 html
drwxr-xr-x 2 root root 4096 Oct 29 11:04 log
-rw-r--r-- 1 root root  648 Sep  7 23:38 nginx.conf
[root@iZm5e8xpme70yxqoa4zoydZ nginx]# cd html/
[root@iZm5e8xpme70yxqoa4zoydZ html]# ll
total 0
[root@iZm5e8xpme70yxqoa4zoydZ html]# vim index.html

编写内容this is big message