Docker Lab

Some notes on installing Docker.

Install Docker

Simple install of docker-ce on Fedora/RHEL

1. Install docker-ce

   sudo dnf install dnf-plugins-core
   sudo dnf config-manager --add-repo=https://download.docker.com/linux/centos/docker-ce.repo
   sudo dnf install docker-ce docker-ce-cli containerd.io
   
   sudo systemctl enable --now docker
   
   # Add user to docker group
   usermod -a -G docker $USER
   newgrp docker
   

2. Test install… hello-world

   docker run hello-world
   

Create Docker tarball

Option to download docker-ce and dependencies in order to create a tarball for installing on workstation in disconnected environment.

Note

These instructions assume you haven’t isntalled docker-ce or any of the dependencies.

1. Add docker-ce repo

   Important

   Do not “install” docker-ce.

   sudo dnf install dnf-plugins-core
   sudo dnf config-manager --add-repo=https://download.docker.com/linux/centos/docker-ce.repo
   

2. Download docker and dependencies RPM’s

   sudo dnf install --downloadonly --downloaddir=$HOME/docker docker-ce docker-ce-cli containerd.io
   

3. Create tarball

   cd ~/docker
   
   sudo tar -cvzf docker-deps-rpms.tar.gz *.rpm
   

4. Install docker

   cd ~/docker
   
   sudo dnf localinstall *.rpm
   
   sudo systemctl enable --now docker
   
   # Add user to docker group
   sudo usermod -a -G docker $USER
   newgrp docker
   

5. Test install… hello-world

   docker run hello-world