ADD: Testnet-faucet build

.github/workflows/release-testnet-faucet-docker.yml

@@ -0,0 +1,60 @@
+# This job builds and publishes a docker image for the gallery dApp to
+# the dockerhub image repository.
+name: Create and publish a Docker image for the testnet faucet dApp.
+
+on:
+  workflow_dispatch: # allows manual trigger
+
+  push:
+    tags:
+      - 'testnet-faucet/*.*.*'
+
+env:
+  REGISTRY: docker.io
+  IMAGE_NAME: dapp-testnet-faucet
+  EXPECTED_TAG: ${{ github.ref_name }}
+
+jobs:
+  build-and-push-image:
+    runs-on: ubuntu-latest
+    environment: testnet-faucet
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+      # Uses the `docker/login-action` action to log in to the Container registry.
+      - name: Log in to the Container registry
+        uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      - name: Extract tag from package.json
+        id: meta
+        run: |
+          export VERSION=$(jq -r .version testnet-faucet/package.json)
+          export FULL_IMAGE_TAG="${{ env.REGISTRY }}/concordium/$IMAGE_NAME:$VERSION"
+          echo "::notice FULL_IMAGE_TAG=${FULL_IMAGE_TAG}"
+          Make sure the image does not exist. Abort if we can retrieve any metadata.
+          if docker manifest inspect ${FULL_IMAGE_TAG} > /dev/null; then
+             echo "::error ${FULL_IMAGE_TAG} already exists"
+             exit 1
+          elif [ ! "${EXPECTED_TAG}" = "testnet-faucet/${VERSION}" ]; then
+             echo "::error Expected tag ${EXPECTED_TAG} does not match the version ${VERSION}."
+             exit 1
+          else
+             # Store the full image tag into a tag variable for the following step.
+             echo "tag=${FULL_IMAGE_TAG}" > "$GITHUB_OUTPUT"
+          fi
+      - name: Prepare .env file
+        run: |
+          echo "${{ vars.TESTNET_FAUCET_NEXT_PUBLIC }}" > ./testnet-faucet/.env
+      - name: Build and push Docker image
+        uses: docker/build-push-action@f2a1d5e99d037542a71f64918e516c093c6f3fc4
+        with:
+          context: testnet-faucet
+          file: testnet-faucet/Dockerfile
+          push: true
+          platforms: linux/amd64
+          tags: ${{ steps.meta.outputs.tag }}

testnet-faucet/Dockerfile

@@ -0,0 +1,59 @@
+# Based on:
+# - https://nextjs.org/docs/app/building-your-application/deploying
+# - https://github.com/vercel/next.js/blob/canary/examples/with-docker/Dockerfile
+FROM node:20-alpine AS base
+
+# Install dependencies only when needed
+FROM base AS deps
+# Check https://github.com/nodejs/docker-node/tree/b4117f9333da4138b03a546ec926ef50a31506c3#nodealpine to understand why libc6-compat might be needed.
+RUN apk add --no-cache libc6-compat
+WORKDIR /app
+
+# Install dependencies based on the preferred package manager
+COPY package.json yarn.lock* ./
+RUN yarn --frozen-lockfile
+
+# Rebuild the source code only when needed
+FROM base AS builder
+WORKDIR /app
+COPY --from=deps /app/node_modules ./node_modules
+COPY . .
+
+# Next.js collects completely anonymous telemetry data about general usage.
+# Learn more here: https://nextjs.org/telemetry
+# Uncomment the following line in case you want to disable telemetry during the build.
+# ENV NEXT_TELEMETRY_DISABLED 1
+
+RUN yarn run build
+
+# Production image, copy all the files and run next
+FROM base AS runner
+WORKDIR /app
+
+ENV NODE_ENV production
+# Uncomment the following line in case you want to disable telemetry during runtime.
+# ENV NEXT_TELEMETRY_DISABLED 1
+
+RUN addgroup --system --gid 1001 nodejs
+RUN adduser --system --uid 1001 nextjs
+
+COPY --from=builder /app/public ./public
+
+# Set the correct permission for prerender cache
+RUN mkdir .next
+RUN chown nextjs:nodejs .next
+
+# Automatically leverage output traces to reduce image size
+# https://nextjs.org/docs/advanced-features/output-file-tracing
+COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
+COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
+
+USER nextjs
+
+EXPOSE 3000
+
+ENV PORT=3000
+
+# server.js is created by next build from the standalone output
+# https://nextjs.org/docs/pages/api-reference/next-config-js/output
+CMD HOSTNAME="0.0.0.0" node server.js

testnet-faucet/next.config.mjs

@@ -1,6 +1,7 @@
 /** @type {import('next').NextConfig} */
 const nextConfig = {
     reactStrictMode: true,
+    output: 'standalone',
 };
 
 export default nextConfig;