12/25/2021

Install Docker Snap Ubuntu

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Command 'docker' not found, but can be installed with: sudo snap install docker # version 19.03.11, or sudo apt install docker.io # version 19.03.8-0ubuntu1.20.04.1 See 'snap info docker' for.

This topic describes the Docker and Snap prerequisites for the Remote Access connector on Ubuntu and RedHat.

What are Snap and Docker?

  • This topic describes the Docker and Snap prerequisites for the Remote Access connector on Ubuntu and RedHat. What are Snap and Docker? Docker is a set of platforms that uses OS-level virtualization to deliver software in packages called containers.
  • Some types of snaps aren't actually confined (although you need to install those in a special way, so you'll know), and other snaps use interfaces which are inherently insecure, such as X11. Debs are typically frozen when an Ubuntu release is cut, and that deb typically won't see an update over the course of the Ubuntu release.

Docker is a set of platforms that uses OS-level virtualization to deliver software in packages called containers. For more details, see https://www.docker.com/.

Install Docker Snap Ubuntu Windows 10

Snap is a software deployment and package management system developed by Canonical for the Linux operating system. For more details, see https://snapcraft.io/.

Prerequisites for Ubuntu

Docker

For more details about installing Docker on Ubuntu, see https://docs.docker.com/install/linux/docker-ce/ubuntu/.

  1. Update the Docker apt package index:

  2. Install packages to allow apt to use a repository over HTTPS:

    You may be prompted for - sudo dpkg --configure -a

    If the following screen appears, select Yes.

  3. Add Docker’s official GPG key:

  4. Use the following command to set up the stable repository:

  5. Update the apt package index:

  6. Install the latest version of Docker:

  7. Verify that Docker is installed correctly:

Snap

In Ubuntu 18.04, Snap is installed by default so you can use it immediately.

Prerequisites for RedHat

Docker

For more details about installing Docker on RedHat, see https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux_atomic_host/7/html-single/getting_started_with_containers/index#getting_docker_in_rhel_7.

  1. Enable the following repositories, which will allow you to install the docker package and related software:

    Make sure you specify the code exactly as it appears in the above example.

  2. Install Docker:

  3. Start docker:

  4. Enable docker:

  5. Verify that Docker is installed correctly:

Snap

For more details about installing Snap on RedHat, see https://snapcraft.io/docs/installing-snap-on-red-hat.

  1. Add the Extra Packages for Enterprise Linux (EPEL) repository to your RHEL 7 system with the following command:

  2. Add the extra repositories:

  3. Install the snapd package:

  4. Enable the systemd unit that manages the main snap communication socket:

  5. Run the following command to enable classic snap support and create a symbolic link between /var/lib/snapd/snap and /snap:

  6. Verify that Snap is installed correctly:

SNAP usage on rhel with a non-root user displays the following warning:

Warning: /var/lib/snapd/snap/bin was not found in your $PATH. If you've not
restarted your session since you installed snapd, try doing that.
Please see https://forum.snapcraft.io/t/9469 for more details.

How To: Install Docker in Ubuntu Using Snap

Docker

One of the advantages snap package manager brings to Ubuntu is support for multiple versions of same software available and installable simultaneously. For example, you can decide if you want to run the stable or latest (edge) version of Docker.

Before You Install Docker with Snap

Apparently, snap model is not fully compatible with Docker right now, this means starting and using docker that you installed via snap is not as simple as you might expect.

Specifically, Docker is no longer maintaining the Docker version so it’s built and supported by Canonical (Ubuntu vendor).

The way I see it: if you just need a hassle free Docker setup, install Docker using apt-get from the official Docker repositories.

Docker

Confirm Docker Versions Available via Snap

Running snap info docker will list all the available channels for Docker in snap:

Install Latest (Edge) Version of Docker with Snap

Based on the above, let’s install the latest Docker package version available via edge channel:

Check the Version of Docker We Just Installed

Docker Ubuntu Install Snap

See Also

  • Ubuntu 19.04
  • Installing Ubuntu 19.04 on Dell XPS 13 laptop
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