add gh workflow to build images using Docker cloud

.github/workflows/docker-publish.yml

@@ -0,0 +1,74 @@
+name: Docker
+
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - "*"
+
+jobs:
+  push:
+    runs-on: ubuntu-24.04
+    if: github.event_name == 'push'
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Free Disk Space Before Build
+        run: |
+          echo "Disk space before cleanup:"
+          df -h
+          sudo rm -rf /usr/local/.ghcup
+          sudo rm -rf /opt/hostedtoolcache/CodeQL
+          sudo rm -rf /usr/local/lib/android/sdk/ndk
+          sudo rm -rf /usr/share/dotnet
+          sudo rm -rf /opt/ghc
+          sudo rm -rf /usr/local/share/boost
+          sudo apt-get clean
+          echo "Disk space after cleanup:"
+          df -h
+
+      - name: Prepare tag
+        id: prepare_tag
+        run: |
+          IMAGE_ID=drachtio/drachtio-server
+
+          # Strip git ref prefix from version
+          VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\),\1,')
+
+          # Strip "v" prefix from tag name
+          [[ "${{ github.ref }}" == "refs/tags/"* ]] && VERSION=$(echo $VERSION | sed -e 's/^v//')
+
+          # Use Docker `latest` tag convention
+          [ "$VERSION" == "main" ] && VERSION=latest
+
+          echo IMAGE_ID=$IMAGE_ID
+          echo VERSION=$VERSION
+
+          echo "image_id=$IMAGE_ID" >> $GITHUB_OUTPUT
+          echo "version=$VERSION" >> $GITHUB_OUTPUT
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+        with:
+          version: "lab:latest"
+          driver: cloud
+          endpoint: "drachtio/freeswitch-builder"
+      - name: Build and push multi-arch image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm64  # Specify the architectures
+          tags: ${{ steps.prepare_tag.outputs.image_id }}:${{ steps.prepare_tag.outputs.version }}
+          build-args: | 
+            BUILD_CPUS=16
+          push: true  # Ensure the images are pushed to the registry
+