chore: Add Docker image workflows for GPU and CPU

.github/workflows/docker-images.off

@@ -0,0 +1,52 @@
+name: Whishper frontend and backend images
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        directory: ['backend', 'frontend']
+
+    steps:
+      - name: Checkout
+        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: Login to DockerHub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Build and push Docker images
+        uses: docker/build-push-action@v5
+        with:
+          context: ${{ matrix.directory }}
+          file: ${{ matrix.directory }}/Dockerfile
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: |
+            ${{ format('{0}/whishper-{1}:{2}', secrets.DOCKERHUB_USERNAME, matrix.directory, github.event.release.tag_name) }}
+
+      - name: Build and push Docker images
+        if: ${{ !github.event.release.prerelease }}
+        uses: docker/build-push-action@v5
+        with:
+          context: ${{ matrix.directory }}
+          file: ${{ matrix.directory }}/Dockerfile
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: |
+            ${{ format('{0}/whishper-{1}:latest', secrets.DOCKERHUB_USERNAME, matrix.directory) }}
+