WIP: Build containers with GHA

.github/workflows/images.yml

@@ -0,0 +1,64 @@
+name: Build container images
+
+on:
+  push:
+    branches:
+    - 'clangd-example'
+  workflow_dispatch:
+
+env:
+  REGISTRY: ghcr.io
+  REPO_NAME: ${{ github.repository }}
+
+jobs:
+  images:
+    name: container images build and deploy
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: read
+      packages: write
+      attestations: write
+      id-token: write
+
+    strategy:
+      matrix:
+        image_names: [ eclipse.jdt.ls, groovy, clangd ]
+
+    timeout-minutes: 60
+    steps:
+    - name: Checkout
+      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 }}
+
+    - name: Extract metadata (tags, labels) for Docker
+      id: meta
+      uses: docker/metadata-action@v5
+      with:
+        images: |
+          ${{ env.REGISTRY }}/${{ env.REPO_NAME }}/${{ matrix.image_names }}
+        # enforce latest tag for now
+        tags: |
+          type=raw,value=latest
+
+    - name: Build and push Docker image
+      id: push
+      uses: docker/build-push-action@v6
+      with:
+        context: ./packages/examples/resources/{{ matrix.image_names }}
+        push: true
+        tags: ${{ steps.meta.outputs.tags }}
+        labels: ${{ steps.meta.outputs.labels }}
+
+    - name: Generate artifact attestation
+      uses: actions/attest-build-provenance@v1
+      with:
+        subject-name: ${{ env.REGISTRY }}/${{ env.REPO_NAME }}/${{ matrix.image_names }}
+        subject-digest: ${{ steps.push.outputs.digest }}
+        push-to-registry: true