As Zorin 16.3 is based on Ubuntu/focal, there's a little workaround to have a usable docker setup.
Process
#1 Install Docker system
As you need to create containers, you need docker to do so. Here's simple process just cited from multiple references.
# preliminaries
sudo apt-get update
sudo apt-get install ca-certificates curl gnupg
Need to add keyrings:
# keyrings
sudo install -m 0755 -d /etc/apt/keyrings
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg — dearmor -o /etc/apt/keyrings/docker.gpg
sudo chmod a+r /etc/apt/keyrings/docker.gpg
Adding apt source next:
echo \
“deb [arch="$(dpkg — print-architecture)" signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \
"$(. /etc/os-release && echo "$VERSION_CODENAME")" stable" | \
sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
I recommend this step to be done manually if you happen to face any issue. You should shoud be able to have contents as in below in the /etc/apt/sources.list.d/docker.list file. I've manually written this after running into a little issue which works like a charm now.
deb [arch=amd64 signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu focal stable
After that its just installing stuffs:
# installation just starts now
sudo apt-get update
sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
Finally, testing step is as an usual hello-world container.
sudo docker run hello-world
Now, you're good to go if you see welcome message running down this hello-world container. Go through this link if you've been facing issues with APT repository. [3]
#2 Docker Desktop
A GUI makes it easy to navigate through the whole docker system. Have a look here to setup docker desktop after installation of docker system. Here's the summary: [2]
# if don't exist
sudo apt install gnome-terminal
# removing previous installations
sudo apt remove docker-desktop
rm -r $HOME/.docker/desktop
sudo rm /usr/local/bin/com.docker.cli
sudo apt purge docker-desktop
# install by apt after downloading from the page
sudo apt-get update
sudo apt-get install ./docker-desktop-<version>-<arch>.deb
# launch
systemctl --user start docker-desktop
Next time if you want to upgrade the application, its quite easy:
sudo apt-get install ./docker-desktop-<version>-<arch>.deb
Check the whole installation as below:
docker compose version
Docker Compose version v2.17.3
docker --version
Docker version 23.0.5, build bc4487a
docker version
Client: Docker Engine - Community
Cloud integration: v1.0.31
Version: 23.0.5
API version: 1.42
<...>
#3 Optional: Install kubernetes
As you've installed docker desktop, you can do this installation from the GUI settings in the app quite easily.
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