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4th chunk of `content/manuals/engine/install/raspberry-pi-os.md`
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You have now successfully installed and started Docker Engine.

{{% include "root-errors.md" %}}

#### Upgrade Docker Engine

To upgrade Docker Engine, follow step 2 of the
[installation instructions](#install-using-the-repository),
choosing the new version you want to install.

### Install from a package

If you can't use Docker's `apt` repository to install Docker Engine, you can
download the `deb` file for your release and install it manually. You need to
download a new file each time you want to upgrade Docker Engine.

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1. Go to [`{{% param "download-url-base" %}}/dists/`]({{% param "download-url-base" %}}/dists/).

2. Select your Raspberry Pi OS version in the list.

3. Go to `pool/stable/` and select the applicable architecture (`amd64`,
   `armhf`, `arm64`, or `s390x`).

4. Download the following `deb` files for the Docker Engine, CLI, containerd,
   and Docker Compose packages:

   - `containerd.io_<version>_<arch>.deb`
   - `docker-ce_<version>_<arch>.deb`
   - `docker-ce-cli_<version>_<arch>.deb`
   - `docker-buildx-plugin_<version>_<arch>.deb`
   - `docker-compose-plugin_<version>_<arch>.deb`

5. Install the `.deb` packages. Update the paths in the following example to
   where you downloaded the Docker packages.

   ```console
   $ sudo dpkg -i ./containerd.io_<version>_<arch>.deb \
     ./docker-ce_<version>_<arch>.deb \
     ./docker-ce-cli_<version>_<arch>.deb \
     ./docker-buildx-plugin_<version>_<arch>.deb \
     ./docker-compose-plugin_<version>_<arch>.deb
   ```

   The Docker daemon starts automatically.

6. Verify that the installation is successful by running the `hello-world` image:

   ```console
   $ sudo service docker start
   $ sudo docker run hello-world
   ```

   This command downloads a test image and runs it in a container. When the
   container runs, it prints a confirmation message and exits.

You have now successfully installed and started Docker Engine.

{{% include "root-errors.md" %}}

#### Upgrade Docker Engine

To upgrade Docker Engine, download the newer package files and repeat the
[installation procedure](#install-from-a-package), pointing to the new files.

{{% include "install-script.md" %}}

## Uninstall Docker Engine

1. Uninstall the Docker Engine, CLI, containerd, and Docker Compose packages:

   ```console
   $ sudo apt-get purge docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin docker-ce-rootless-extras
   ```

2. Images, containers, volumes, or custom configuration files on your host
   aren't automatically removed. To delete all images, containers, and volumes:

   ```console
   $ sudo rm -rf /var/lib/docker
   $ sudo rm -rf /var/lib/containerd
   ```

3. Remove source list and keyrings

   ```console
   $ sudo rm /etc/apt/sources.list.d/docker.list
   $ sudo rm /etc/apt/keyrings/docker.asc
   ```

You have to delete any edited configuration files manually.

## Next steps

- Continue to [Post-installation steps for Linux](linux-postinstall.md).

Title: Installing, Upgrading, and Uninstalling Docker Engine
Summary
This section details how to install, upgrade, and uninstall Docker Engine. It explains how to install from a .deb package, including downloading the necessary files, installing them using dpkg, and verifying the installation with the hello-world image. It also provides instructions on upgrading using new package files and repeating the installation procedure. Finally, it outlines the steps to uninstall Docker Engine, remove related files and directories, and clean up source lists and keyrings.