docs(website): Add a section about using the official Docker images

Fixes #7781.

Signed-off-by: Martin Nonnenmacher <martin.nonnenmacher@bosch.io>

website/docs/getting-started/installation.md

@@ -4,6 +4,52 @@ sidebar_position: 1
 
 # Installation
 
+## From Docker
+
+The easiest way to run ORT is to use the Docker images available from the GitHub container registry. There are two
+images available: [`ort`](https://github.com/oss-review-toolkit/ort/pkgs/container/ort/versions) and
+[`ort-minimal`](https://github.com/oss-review-toolkit/ort/pkgs/container/ort-minimal/versions).
+
+The difference between those two images is that `ort` contains installations of all supported package managers while
+`ort-minimal` contains only the most commonly used package managers to reduce the image size. For example, for release
+`13.0.0` the size of the [`ort`](https://github.com/oss-review-toolkit/ort/pkgs/container/ort/168323397?tag=13.0.0)
+image is ~7 GB and the size of the
+[`ort-minimal`](https://github.com/oss-review-toolkit/ort/pkgs/container/ort-minimal/168320821?tag=13.0.0) image is ~3
+GB. The examples below use the `ort` image. To run them with the `ort-minimal` image replace `ort` with `ort-minimal`.
+
+To run the Docker image for the latest ORT release use:
+
+```shell
+$ docker run ghcr.io/oss-review-toolkit/ort --version
+13.0.0
+```
+
+To run a specific version, for example `12.0.0`, use:
+
+```shell
+$ docker run ghcr.io/oss-review-toolkit/ort:12.0.0 --version
+12.0.0
+```
+
+To show the command line help run the image with the `--help` option:
+
+```shell
+docker run ghcr.io/oss-review-toolkit/ort --help
+```
+
+To show which versions of the required tools are installed run the image with the `requirements` command:
+
+```shell
+docker run ghcr.io/oss-review-toolkit/ort requirements
+```
+
+The above commands always create a new Docker container. To avoid that they pile up Docker can be run with the `--rm`
+flag to automatically remove the container when the command has finished:
+
+```shell
+docker run --rm ghcr.io/oss-review-toolkit/ort [command]
+```
+
 ## From binaries
 
 Preliminary binary artifacts for ORT are currently available via