chore(ci): add section to update docker hub readme

Author: solidnerd

.github/workflows/master.yml

@@ -123,3 +123,10 @@ jobs:
         labels: ${{ steps.docker_meta.outputs.labels }}
         cache-from: type=registry,ref=solidnerd/bookstack-dev:${{ github.sha }}
         cache-to: type=registry,ref=solidnerd/bookstack-dev:${{ github.sha }}
+
+      - name: Update repo description
+        uses: peter-evans/dockerhub-description@e98e4d1628a5f3be2be7c231e50981aee98723ae # v4.0.0
+        with:
+          username: ${{ vars.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+          repository: solidnerd/bookstack

.github/workflows/release.yml

@@ -130,6 +130,13 @@ jobs:
         cache-from: type=registry,ref=solidnerd/bookstack-dev:${{ github.sha }}
         cache-to: type=registry,ref=solidnerd/bookstack-dev:${{ github.sha }}
 
+    - name: Update repo description
+      uses: peter-evans/dockerhub-description@e98e4d1628a5f3be2be7c231e50981aee98723ae # v4.0.0
+      with:
+        username: ${{ vars.DOCKERHUB_USERNAME }}
+        password: ${{ secrets.DOCKER_PASSWORD }}
+        repository: solidnerd/bookstack
+
   create-release:
     runs-on: ubuntu-24.04
     needs: push