rhel7-docker-install

rhel7-docker-install.sh

#! /bin/bash +X

# later we will disable selinux
# sudo setenforce Permissive
# getenforce # just incase youy want to check selinuxmode
# lets make sure we are a clean install of docker
sudo yum remove docker docker-common docker-selinux docker-engine-selinux docker-engine docker-ce
# now install some tools dmpd(for short) ensures rhel 7 respects gpg settings in repos (issue is https://access.redhat.com/solutions/2850911) see https://access.redhat.com/discussions/5336741 for the fix
sudo yum install -y yum-utils device-mapper-persistent-data lvm2
sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
## ok now we have some unmet dependacies and it gets a little hacky (note these are not available in https://dl.fedoraproject.org/pub/epel/7/x86_64/Packages/)
# source from centos/os repo
sudo cat > /etc/yum.repos.d/centos-os.repo << EOF
[centos-os]
name=Centos os - $basearch
baseurl=http://mirror.centos.org/centos/7/os/x86_64/
enabled=1
gpgcheck=0
EOF

sudo yum install libcgroup-tools
# ok lets get the rest of teh dependacies https://stackoverflow.com/a/66902898/2362673
sudo cat > /etc/yum.repos.d/centos-extras.repo << EOF
[centos-extras]
name=Centos extras - $basearch
baseurl=http://mirror.centos.org/centos/7/extras/x86_64
enabled=1
gpgcheck=0
EOF
sudo yum -y install slirp4netns fuse-overlayfs container-selinux
# finally lets install docker
sudo yum install -y docker-ce-20.10.7-3.el7 docker-ce-cli-20.10.7-3.el7 containerd.io
# final sanity check, NOTE: docker deamon is not running and you will see an error, do not use in user_data or do one of many work arounds :)
docker version
# docker suggested test for reference https://docs.docker.com/engine/install/rhel/
# sudo docker run hello-world