Add Docker build pipeline

.github/workflows/docker-image.yml

@@ -0,0 +1,54 @@
+name: Build Docker image
+
+on:
+  workflow_dispatch
+  push:
+    branches:
+      - 'master'
+    tags:
+      - 'v*'
+  pull_request:
+    branches:
+      - 'master'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - # Check out repository
+        name: Checkout
+        uses: actions/checkout@v3
+      - # Set up QEMU for multiarch support
+        name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+      - # Set up Docker BuildX for Docker image building
+        name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@v1
+      - # Set proper tags
+        name: Docker metadata
+        id: docker_meta # you'll use this in the next step
+        uses: docker/metadata-action@v3
+        with:
+          images: bilde2910/hauk
+          tags: |
+            type=ref,event=branch
+            type=ref,event=pr
+            type=semver,pattern=v{{version}}
+            type=semver,pattern=v{{major}}.x-stable
+      - # Log in to Docker Hub
+        name: Login to Docker Hub
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      - # Build and push
+        name: Build and push
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm/v7,linux/arm64
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.docker_meta.outputs.tags }}
+          labels: ${{ steps.docker_meta.outputs.labels }}