Resurrect the docker image build/push to GHCR

.github/workflows/build.yml

@@ -0,0 +1,45 @@
+name: Build and push docker image
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: philanthropydatacommons/service
+
+on:
+  push:
+    branches:
+      - 'main'
+
+jobs:
+  build-and-push-docker-image:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v4
+      - run: echo VERSION="$(git log -1 --date=unix --pretty=format:'%cd' | date --utc '+%Y%m%d')"-"$(git log -1 --pretty=format:'%h')" >> "$GITHUB_ENV"
+      - name: Build with node
+        uses: actions/setup-node@v4
+        with:
+          node-version-file: .node-version
+      - run: npm ci
+      - run: npm run build
+      - run: npm prune --omit=dev
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          platforms: linux/amd64
+          push: true
+          tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ env.VERSION }}, ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
+          cache-from: type=registry,ref=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:buildcache
+          cache-to: type=registry,ref=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:buildcache,mode=max