Automate GHCR environment publishing

.github/workflows/publish-environments.yml

@@ -0,0 +1,46 @@
+name: Publish Environments
+
+on:
+  workflow_dispatch:
+  release:
+    types:
+      - published
+
+permissions:
+  contents: read
+  packages: write
+
+concurrency:
+  group: publish-environments-${{ github.ref }}
+  cancel-in-progress: false
+
+jobs:
+  publish:
+    runs-on: ubuntu-24.04
+    env:
+      UV_CACHE_DIR: .uv-cache
+      OCI_REGISTRY_USERNAME: ${{ github.actor }}
+      OCI_REGISTRY_PASSWORD: ${{ secrets.GITHUB_TOKEN }}
+    steps:
+      - name: Check out source
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+
+      - name: Set up uv
+        uses: astral-sh/setup-uv@v6
+
+      - name: Install project dependencies
+        run: make setup
+
+      - name: Run project checks
+        run: make check
+
+      - name: Build real runtime inputs
+        run: make runtime-materialize
+
+      - name: Publish official environments to GHCR
+        run: make runtime-publish-official-environments-oci