[#15] Add build-image.yaml workflow to build and publish to DockerHub…

… the latest version

.github/workflows/build-image.yaml

@@ -0,0 +1,32 @@
+name: ci
+
+on:
+  push:
+    branches:
+      - 'issue#15-github-action'
+
+jobs:
+  Build-Docker-Image:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+        with:
+          platforms: linux/amd64,linux/arm64
+      -
+        name: Login to Docker Hub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      -
+        name: Build and push
+        uses: docker/build-push-action@v3
+        with:
+          context: .
+          push: true
+          tags: xserrat/facebook-demucs:${{ env.GITHUB_REF_NAME }}