Automated Dockerhub Readme updates

.github/workflows/dockerhub.yml

@@ -38,3 +38,11 @@ jobs:
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
+
+      - name: Update Readme and short description
+        uses: peter-evans/dockerhub-description@v2
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_ACCESS_TOKEN }}
+          repository: krateng/maloja
+          short-description: ${{ github.event.repository.description }}

README.md

@@ -88,6 +88,8 @@ Of note for docker users are these settings which should be passed as environmen
   * Mount a [volume](https://docs.docker.com/engine/reference/builder/#volume) to the specified directory to access these files outside the container (and to make them persistent)
 * `MALOJA_FORCE_PASSWORD` -- Set an admin password for maloja
 
+Be aware that Maloja uses IPv6 per default. Also make sure to bind the web port (default 42010).
+
 #### From Source
 
 The [`Dockerfile`](Dockerfile) builds Maloja from source. Images are available on [**Dockerhub**](https://hub.docker.com/r/krateng/maloja):