github: add docker push readme action

Author: dariusstefan

.github/workflows/docker-readme.yml

@@ -0,0 +1,27 @@
+---
+name: Update Docker Hub Description
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - README.md
+      - .github/workflows/docker-readme.yml
+
+jobs:
+  dockerHubDescription:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+
+
+    - name: Docker Hub Description
+      uses: peter-evans/dockerhub-description@v4
+      with:
+        username: ${{ secrets.DOCKER_USERNAME }}
+        password: ${{ secrets.DOCKER_TOKEN }}
+        repository: opensips/opensips
+        readme-filepath: ./README.md
+        short-description: ${{ github.event.repository.description }}
+        enable-url-completion: true
+