Add GitHub Actions workflow for Docker image releases

.github/workflows/docker-release.yml

@@ -0,0 +1,41 @@
+name: Docker Release
+
+on:
+  push:
+    tags:
+      - '*'
+
+permissions:
+  contents: read
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Extract tag name
+        id: tag
+        run: echo "tag=${GITHUB_REF_NAME}" >> $GITHUB_OUTPUT
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm64,linux/arm/v7,linux/arm/v6,linux/ppc64le,linux/s390x
+          push: true
+          tags: appwrite/requestcatcher:${{ steps.tag.outputs.tag }}