创建rhel7基础镜像

1. 准备

1）光驱挂载ISO镜像

export MOUNT_DIR=/mnt
mount /dev/sr0 ${MOUNT_DIR}

2. 创建RHEL7基础镜像

1）创建rmp根目录

mkdir -p /ups/data/rhel76
export rpm_root=/ups/data/rhel76

2）初始化

rpm --root ${rpm_root} --initdb

3）安装rmp包（redhat-release-server rpm）

rpm --root ${rpm_root} -ivh ${MOUNT_DIR}/Packages/redhat-release-server-7.6-4.el7.x86_64.rpm

4）配置yum源

mkdir -p ${rpm_root}/etc/yum.repos.d/cat >${rpm_root}/etc/yum.repos.d/rhel7.repo<<EOF
[rhel7]
name=rhel7
baseurl=file://${MOUNT_DIR}
enabled=1
EOF

5）加载GPG Key

rpm --root ${rpm_root} --import  ${MOUNT_DIR}/RPM-GPG-KEY-redhat-*

6）最小化安装rhel7到${rpm_root}目录

yum -y groupinstall "core" --setopt=group_package_types=mandatory --installroot=${rpm_root}

备注：（group_package_types）

mandatory  package groups/packages are always installed.
default        package groups/packages are normally installed except if specified otherwise.
optional      package groups/packages are only installed on demand.

7）创建镜像

tar -C ${rpm_root}/ -c . | docker import - biaobes/rhel:7.6

8）运行测试

docker run --hostname='rhel7-container' biaobes/rhel7:7.6 uname -a

9）发布镜像到公有仓库

docker push biaobes/rhel7:7.6