[set up Docker's repositories](#install-using-the-repository) and install
  from them, for ease of installation and upgrade tasks. This is the
  recommended approach.

- You can download the RPM package,
  [install it manually](#install-from-a-package), and manage
  upgrades completely manually. This is useful in situations such as installing
  Docker on air-gapped systems with no access to the internet.

- In testing and development environments, you can use automated
  [convenience scripts](#install-using-the-convenience-script) to install Docker.

### Install using the rpm repository {#install-using-the-repository}

Before you install Docker Engine for the first time on a new host machine, you
need to set up the Docker repository. Afterward, you can install and update
Docker from the repository.

#### Set up the repository

Set up the repository.

```console
$ sudo zypper addrepo {{% param "download-url-base" %}}/docker-ce.repo
```

#### Install Docker Engine

1. Install the Docker packages.

   {{< tabs >}}
   {{< tab name="Latest" >}}

   To install the latest version, run:

   ```console
   $ sudo zypper install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
   ```

   If prompted to accept the GPG key, verify that the fingerprint matches
   `060A 61C5 1B55 8A7F 742B 77AA C52F EB6B 621E 9F35`, and if so, accept it.

   This command installs Docker, but it doesn't start Docker. It also creates a
   `docker` group, however, it doesn't add any users to the group by default.

   {{< /tab >}}
   {{< tab name="Specific version" >}}

   To install a specific version, start by listing the available versions in
   the repository:

   ```console
   $ sudo zypper search -s --match-exact docker-ce | sort -r
 
     v  | docker-ce | package | 3:{{% param "docker_ce_version" %}}-1 | s390x | Docker CE Stable - s390x
     v  | docker-ce | package | 3:{{% param "docker_ce_version_prev" %}}-1 | s390x | Docker CE Stable - s390x
   ```

   The list returned depends on which repositories are enabled, and is specific
   to your version of SLES.

   Install a specific version by its fully qualified package name, which is
   the package name (`docker-ce`) plus the version string (2nd column),
   separated by a hyphen (`-`). For example, `docker-ce-3:{{% param "docker_ce_version" %}}`.

   Replace `<VERSION_STRING>` with the desired version and then run the following
   command to install:

   ```console
   $ sudo zypper install docker-ce-<VERSION_STRING> docker-ce-cli-<VERSION_STRING> containerd.io docker-buildx-plugin docker-compose-plugin
   ```

   This command installs Docker, but it doesn't start Docker. It also creates a
   `docker` group, however, it doesn't add any users to the group by default.
  
   {{< /tab >}}
   {{< /tabs >}}

2. Start Docker Engine.

   ```console
   $ sudo systemctl enable --now docker
   ```

   This configures the Docker systemd service to start automatically when you
   boot your system. If you don't want Docker to start automatically, use `sudo