Add docker build action

.github/workflows/build.yml

@@ -0,0 +1,46 @@
+name: Build & publish
+
+on:
+  push:
+    branches: [ main ]
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  check:
+    name: Build, lint & test
+    uses: now-u/now-u-app-links/.github/workflows/check.yml@main
+    secrets: inherit
+
+  build:
+    name: Build & publish
+    runs-on: ubuntu-latest
+    needs: check
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - uses: actions/setup-node@v4
+
+      - name: Docker metadata
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          images: |
+            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: type=sha
+
+      - name: Build and push
+        uses: docker/build-push-action@v4
+        with:
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

.github/workflows/check.yml

@@ -5,12 +5,13 @@ on:
     branches: [ "main" ]
   pull_request:
     branches: [ "main" ]
+  workflow_call:
 
 env:
   CARGO_TERM_COLOR: always
 
 jobs:
-  build:
+  check:
     runs-on: ubuntu-latest
 
     steps: