Add docker image build workflow

Signed-off-by: Olivier Vernin <olivier.vernin@suse.com>

Author: olblak

.github/workflows/docker.yaml

@@ -0,0 +1,41 @@
+name: ci
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+      #- name: Login to Docker Hub
+      #  uses: docker/login-action@v2
+      #  with:
+      #    username: ${{ secrets.DOCKERHUB_USERNAME }}
+      #    password: ${{ secrets.DOCKERHUB_PASSWORD }}
+      - name: Login to GitHub Docker Registry
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      #- name: Build and push
+      #  uses: docker/build-push-action@v3
+      #  with:
+      #    context: .
+      #    platforms: linux/amd64,linux/arm64
+      #    push: true
+      #    tags: updatecli/updatemonitor-ui:${{ github.event.release.tag_name }}
+      - name: Build and push on ghcr.io
+        uses: docker/build-push-action@v3
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: ghcr.io/updatecli/updatemonitor-ui:${{ github.event.release.tag_name }}