Add GH action to build berkeley schema images

Triggers on pushes to protected branch `berkeley-schema-migration`.
Builds images and tags them as related to the migration effort.

.github/workflows/berkeley-image.yml

@@ -0,0 +1,52 @@
+name: build-berkeley-image
+
+on:
+  push:
+    branches:
+      - main
+
+env:
+  IS_ORIGINAL_REPO: ${{ github.repository == 'microbiomedata/nmdc-server' }}
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        image: [server, client, worker]
+
+      steps:
+        - name: Checkout code
+          uses: actions/checkout@v4
+          with:
+            fetch-depth: 0
+
+        - name: Login to Github Container Registry
+          uses: docker/login-action@v3
+          with:
+            registry: ghcr.io
+            username: ${{ github.actor }}
+            password: ${{ secrets.GITHUB_TOKEN }}
+
+        - name: Docker meta
+          id: meta
+          uses: docker/metadata-action@v5
+          with:
+            images: |
+              ghcr.io/microbiomedata/nmdc-server/${{ matrix.image }}
+            flavor: |
+              latest=false
+              prefix=berkeley
+            tags: |
+              type=ref,event=branch
+              type=raw,value=berkeley
+
+        - name: Build and push
+          uses: docker/build-push-action@v5
+          with:
+            context: ${{ matrix.image == 'client' && 'web' || '.' }}
+            push: ${{ env.IS_ORIGINAL_REPO }}
+            file: ${{ matrix.image == 'worker' && 'Dockerfile.worker' || matrix.image == 'client' && 'web/Dockerfile' || 'Dockerfile' }}
+            tags: ${{ steps.meta.outputs.tags }}
+            labels: ${{ steps.meta.outputs.labels }}