ci: add back in docker builds

.github/workflows/docker.yml

@@ -0,0 +1,42 @@
+---
+name: Build & Push Docker
+
+on:
+  push:
+    branches:
+      - main
+
+env:
+  GH_REGISTRY: ghcr.io
+
+jobs:
+  build-and-push-github:
+    runs-on: ubuntu-latest
+    if: github.repository == 'xtdb/xt-fiddle'
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Log in to the Container registry
+        uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
+        with:
+          registry: ${{ env.GH_REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
+        with:
+          images: ${{ env.GH_REGISTRY }}/${{ github.repository }}
+          tags: |
+            type=sha,format=short
+            type=sha,format=long
+      - name: Build and push Docker image
+        uses: docker/build-push-action@f2a1d5e99d037542a71f64918e516c093c6f3fc4
+        with:
+          context: .
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

Dockerfile

@@ -0,0 +1,32 @@
+FROM clojure:temurin-21-tools-deps-alpine AS frontend-build
+WORKDIR /app
+
+# Install build deps
+RUN apk add --update nodejs npm yarn
+
+# Install node deps
+COPY package.json .yarnrc.yml yarn.lock .
+RUN yarn install
+
+# Install clojure build deps
+COPY deps.edn .
+RUN clojure -P -M:cljs:dev
+
+# Build the frontend
+# TODO: Copy over only cljs files?
+COPY . .
+RUN npx shadow-cljs release app
+
+
+FROM clojure:temurin-21-tools-deps-alpine
+WORKDIR /app
+
+# Install the runtime deps
+COPY deps.edn .
+RUN clojure -P
+
+# Add the source & frontend code
+COPY --from=frontend-build /app/resources/public/js/compiled /app/resources/public/js/compiled
+# TODO: Copy over only clj files?
+COPY . .
+CMD clojure -X:prod

deps.edn

@@ -50,7 +50,7 @@
               "-Dio.netty.tryReflectionSetAccessible=true"]}
 
   :prod
-  {:exec-fn main/-main
+  {:exec-fn xt-play.main/-main
    :jvm-opts ["--add-opens=java.base/java.nio=ALL-UNNAMED"
               "-Dio.netty.tryReflectionSetAccessible=true"]}