feat: add Dockerfile and CI Docker build & push to GHCR

Add multi-stage Dockerfile with standalone Next.js output, and a CI job
that builds and pushes the image to ghcr.io on push to master.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: Slashgear

.dockerignore

@@ -0,0 +1,9 @@
+node_modules
+dist
+.git
+.github
+e2e
+playwright-report
+test-results
+.DS_Store
+.env*.local

.github/workflows/integration.yml

@@ -32,3 +32,29 @@ jobs:
           cache: pnpm
       - run: pnpm install --frozen-lockfile --prefer-offline
       - run: pnpm build
+
+  docker:
+    name: 🐳 Docker build & push
+    if: github.event_name == 'push'
+    needs: nextjs
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - uses: actions/checkout@main
+      - uses: docker/setup-buildx-action@v3
+      - uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - uses: docker/build-push-action@v6
+        with:
+          context: .
+          push: true
+          tags: |
+            ghcr.io/lyonjs/lyonjs.github.com:latest
+            ghcr.io/lyonjs/lyonjs.github.com:${{ github.sha }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

Dockerfile

@@ -0,0 +1,37 @@
+FROM node:24-alpine AS deps
+
+RUN corepack enable pnpm
+
+WORKDIR /app
+COPY package.json pnpm-lock.yaml ./
+RUN pnpm install --frozen-lockfile
+
+FROM node:24-alpine AS build
+
+RUN corepack enable pnpm
+
+WORKDIR /app
+COPY --from=deps /app/node_modules ./node_modules
+COPY . .
+RUN pnpm build
+
+FROM node:24-alpine AS runner
+
+WORKDIR /app
+
+ENV NODE_ENV=production
+ENV HOSTNAME=0.0.0.0
+ENV PORT=3000
+
+RUN addgroup --system --gid 1001 nodejs && \
+    adduser --system --uid 1001 nextjs
+
+COPY --from=build /app/public ./public
+COPY --from=build --chown=nextjs:nodejs /app/dist/standalone ./
+COPY --from=build --chown=nextjs:nodejs /app/dist/static ./dist/static
+
+USER nextjs
+
+EXPOSE 3000
+
+CMD ["node", "server.js"]

next.config.js

@@ -2,6 +2,7 @@ const withMDX = require('@next/mdx')();
 
 /** @type {import('next').NextConfig} */
 const nextConfig = {
+  output: 'standalone',
   experimental: {
     mdxRs: true,
   },