Docker制作镜像的完整过程

目录

• 前言
• 创建步骤
  • 创建CentOS基础镜像
  • 创建容器并自定义
  • 以自定义容器创建新镜像
• 保存、加载镜像tar包
• 将镜像推送到远程仓库
• 参考链接

echo "在当前用户目录下创建创建目录docker/build/centos_7.8.2003" > /dev/null
mkdir -p ~/docker/build/centos_7.8.2003

echo "创建Dockerfile到~/docker/build/centos_7.8.2003目录下" > /dev/null
cat > ~/docker/build/centos_7.8.2003/Dockerfile << EOF 
# 指定基础镜像
FROM centos:7.8.2003

# 设置环境变量
ENV LANG=zh_CN.UTF-8 
    LANGUAGE=zh_CN:zh 
    LC_ALL=zh_CN.UTF-8

# 只在构建镜像的时候执行这些shell指令
RUN yum update -y && 
    yum reinstall -y glibc-common && 
    yum install -y telnet net-tools && 
    yum clean all && 
    rm -rf /tmp/* rm -rf /var/cache/yum/* && 
    localedef -c -f UTF-8 -i zh_CN zh_CN.UTF-8 && 
    ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
EOF

# 解析~/docker/build/centos_7.8.2003/Dockerfile构建名为base-centos的镜像
docker build -t base-centos ~/docker/build/centos_7.8.2003

docker images

echo "用base-centos镜像创建容器，并命名为base-centos" > /dev/null
docker run 
--name base-centos 
--privileged=true 
-dit 
base-centos 
/usr/sbin/init

echo "进入centos容器" > /dev/null
docker exec -it base-centos /bin/bash

echo "vim：编辑文件" > /dev/null
yum install -y vim

echo "lsof：方便查看端口信息" > /dev/null
yum install -y lsof

echo "wget：文件下载" > /dev/null
yum install -y wget

echo "tree：查看目录结构" > /dev/null
yum install -y tree

echo "安装python" > /dev/null
yum install -y python-devel

echo "C的编译环境" > /dev/null
yum install -y gcc gcc-c++
yum install -y zlib
yum install -y zlib-devel
yum install -y tcl  build-essential tk gettext

docker commit base-centos centos:7.8.2003_v1

docker save -o ~/docker/build/centos_7.8.2003/centos_7.8.2003.tar centos:7.8.2003_v1

docker load --input ~/docker/build/centos_7.8.2003/centos_7.8.2003.tar

echo "标记镜像地址和版本号" > /dev/null
docker tag 66b1bc81e1f2 registry.cn-shanghai.aliyuncs.com/exposure/centos:7.8.2003_v1

echo "推送到远程仓库" > /dev/null
docker push registry.cn-shanghai.aliyuncs.com/exposure/centos:7.8.2003_v1