1、添加创建镜像的配置文件

      vim Dockerfile

      输入以下内容：

FROM jdeathe/centos-ssh

MAINTAINER baxk"xxx@honghe-tech.com"

RUN yum install -y openssh-server nginx mysql-server mysql supervisor

RUN sed -i 's/UsePAM yes/UsePAM no/g' /etc/ssh/sshd_config

RUN sed -i 's/PasswordAuthentication no/PasswordAuthentication yes/g' /etc/ssh/sshd_config

RUN sed -i 's/PermitRootLogin no/PermitRootLogin no/g' /etc/ssh/sshd_config

RUN yum -y update

RUN useradd admin

RUN echo "admin:admin" | chpasswd

RUN echo "root:123456" | chpasswd

RUN gpasswd -a admin root

RUN /etc/init.d/mysqld start &&\

mysql -e "grant all privileges on *.* to 'root'@'%' identified by 'root';"&&\

mysql -e "grant all privileges on *.* to 'root'@'localhost' identified by 'root';"&&\

mysql -u root -proot -e "show databases;"

RUN mkdir -p /var/log/supervisor

COPY supervisord.conf /etc/supervisord.conf

EXPOSE 22 80 3306

CMD ["/usr/bin/supervisord"]

2、添加容器启动的配置文件

     vim supervisord.conf

    输入以下内容：

#command 标示容器启动时，需要执行的命令

[supervisord]

nodaemon=true

[program:sshd]

command=/usr/sbin/sshd -D

[program:mysqld]

command=/usr/bin/mysqld_safe

[program:nginx]

command=/usr/sbin/nginx

3、创建镜像

      docker build -t my_centos .

4、docker run -d --name=my_centos -p 50001:22 -p 50002:3306 -p 8080:80 my_centos

5、通过ssh 登录容器

      ssh admin@localhost -p 50001

      密码为：admin

6、通过浏览器访问nginx

      localhost:8080

7、远程连接容器中的mysql

      mysql -h 0.0.0.0 -u root -P 50002 -p

      密码为：letmein

      # 0.0.0.0 为容器ip地址

      通过命令查看容器映射的ip地址

      root@xxx-All-Series:~/docker/centos# docker ps -a

CONTAINER ID        IMAGE                       COMMAND                CREATED             STATUS                   PORTS                                                                   NAMES

62d473045406        centos_nginx_test2:latest   /usr/bin/supervisord   55 minutes ago      Up 55 minutes             0.0.0.0:49153->22/tcp, 0.0.0.0:49154->3306/tcp, 0.0.0.0:49155->80/tcp   nginx2

 

 

 

docker可以支持把一个宿主机上的目录挂载到镜像里。

通过-v参数，冒号前为宿主机目录，必须为绝对路径，冒号后为镜像内挂载的路径

docker run -it -v /home/dock/Downloads:/usr/Downloads ubuntu64 /bin/bash

通过-v参数，冒号前为宿主机目录，必须为绝对路径，冒号后为镜像内挂载的路径

默认挂载的路径权限为读写。如果指定为只读可以用：ro

docker run -it -v /home/dock/Downloads:/usr/Downloads:ro ubuntu64 /bin/bash

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docker run -it -p 80:80 -v `pwd`/logs:/var/log/nginx dockerfile/nginx

这个命令会在当前目录下创建logs目录，存放access.log和error.log

docker run -it -p 80:80 -v `pwd`/www:/www -v `pwd`/config:/etc/nginx/sites-enabled -v `pwd`/logs:/var/log/nginx dockerfile/nginx

• -v pwd/www:/www，将当前路径下的www目录设置为/www，和server配置的路径对应
• -v pwd/config:/etc/nginx/sites-enabled，server文件的本地路径，映射到docker容器的nginx配置路径

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docker run --rm busybox sh -c 'ls /var/log/*'