Docker镜像的构建

Posted 2020-08-26

1. 容器内部像linux一样操作，然后提交容器成镜像

2. Dokcerfile提交镜像

一

1. 创建一个容器

[[email protected] ~]#docker run --name mynginx01 -it centos
[[email protected] ~]# docker  ps -a 
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS                    PORTS                               NAMES
84bcc294325b        nginx               "nginx -g ‘daemon off"   3 seconds ago       Up 3 seconds

2.此时已经进入容器

yum  -y install wget 
wget -O /etc/yum.repos.d/epel.repo 
yum  -y install  nginx
vim  /etc/nginx /nginx.conf 
...
daemon off;
退出

3,制作镜像

[[email protected] ~]# docker  commit  -m  "mynginx01"  be750c11ab1e   mynginx/mynginx:v1  
sha256:5143358c3833b4ee5a40b847d86dee072dc7c0bade9358e7d83323d6349784b0
[[email protected] ~]# 
mynginx/mynginx:v1    仓库/镜像名称：版本标签
[[email protected] ~]# docker images
REPOSITORY                                               TAG                 IMAGE ID            CREATED             SIZE
mynginx/mynginx                                          v1                  5143358c3833        41 seconds ago      340.1 MB

二.Dokcerfile制作镜像

[[email protected] dockerfile]# cat Dockerfile 
FROM centos
MAINTAINER liuhaixiao
RUN yum  -y install wget 
RUN rpm -ivh http://mirrors.aliyun.com/epel/epel-release-latest-7.noarch.rpm
RUN wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
RUN  yum clean all && yum  install  nginx  -y
RUN echo "daemon off;" >>/etc/nginx/nginx.conf
ADD index.html /usr/share/nginx/html/index.html
EXPOSE 80
CMD ["nginx"]
[[email protected] dockerfile]# cat index.html 
hello  liuhx
[[email protected] dockerfile]# pwd
/root/dockerfile
[[email protected] dockerfile]#

构建镜像

cd /root/dockerfile
Docker  build  -t  mynginx/mynginx03:03  ./

[[email protected] dockerfile]# docker images
REPOSITORY                                               TAG                 IMAGE ID            CREATED             SIZE
mynginx/mynginx03                                        v3                  8c81f51923e5        2 minutes ago       374.6 MB

启动容器：

[[email protected] dockerfile]# docker  run  -d  --name   nginx007 -p 86:80  mynginx/mynginx03:v3
6f2501177ac00e064b22c6c3045b973dc41935e82180753a21a14f3224f5f323

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