Docker 是一个开源的应用容器引擎,基于 Go 语言 并遵从 Apache2.0 协议开源。Docker 可以让开发者打包他们的应用以及依赖包到一个轻量级、可移植的容器中,然后发布到任何流行的 Linux 机器上,也可以实现虚拟化。接下来为大家演示一下docker部署wordpress博客系统。

docker初体验:docker 自己定制镜像_依赖包


环境


​centos​​7


安装docker


移除旧版本docker

[root@chaols ~]#  sudo yum remove docker \
> docker-client \
> docker-client-latest \
> docker-common \
> docker-latest \
> docker-latest-logrotate \
> docker-logrotate \
> docker-engine


安装yum-utils包并设置稳定存储库

[root@chaols ~]# yum install -y yum-utils


安装docker

[root@chaols ~]# yum install docker-ce docker-ce-cli containerd.io


启动docker

[root@chaols ~]# systemctl start docker


查看docker镜像


刚刚安装docker是没有镜像的

[root@chaols ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE


下载centos镜像

[root@chaols ~]# docker pull centos


默认centos镜像没有ifconfig


自定义dockerfile文件

FROM centos
ENV MYPATH /usr/local
WORKDIR $MYPATH
RUN yum install -y net-tools
RUN yum install -y vim
EXPOSE 80
CMD echo $MYPATH
CMD echo "-----end-----"
CMD /bin/bash"


开始制作

docker build -f ./dockerfile_chao_centos -t chao.centos:0.1 .


创建虚拟机

root@chaols ~]# docker run -it --name test chao.centos:0.1 /bin/bash


验证ifconfig

[root@f5be14eebc1e local]# ifconfig
eth0: flags=4163<up,broadcast,running,multicast> mtu 1500
inet 172.17.0.2 netmask 255.255.0.0 broadcast 172.17.255.255
ether 02:42:ac:11:00:02 txqueuelen 0 (Ethernet)
RX packets 6 bytes 516 (516.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lo: flags=73<up,loopback,running> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
loop txqueuelen 1000 (Local Loopback)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0