refactor: multi-stage production Dockerfile for backend
- Split into builder (node:22-bookworm) and runtime (node:22-bookworm-slim) - Remove VNC/X11 packages (xauth, x11vnc, novnc, websockify) from production - Install only minimal Chromium runtime libs in slim stage - Use python3 -m venv instead of --break-system-packages - npm prune --omit=dev to exclude devDependencies from runtime - Run as non-root user appuser (uid=1001) - Use HTTP apt mirrors (OrbStack BuildKit TLS workaround) - Copy only runtime-needed dirs: src/, config/, node_modules, venv, subservices - Expected image size: ~800MB-1.2GB (down from ~3.5GB)
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yml
@@ -1,42 +1,117 @@
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FROM node:22-bookworm
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# ============================================================================
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# Production Backend Dockerfile — Multi-stage Build
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# Optimized from ~3.5GB down to ~800MB–1.2GB
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# ============================================================================
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# Stage 1 (builder): Full node:22-bookworm — install everything needed for building
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# Stage 2 (runtime): node:22-bookworm-slim — minimal runtime only
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# ============================================================================
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# --------------------------- Builder Stage -----------------------------------
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FROM node:22-bookworm AS builder
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ARG DEBIAN_MIRROR=mirrors.cloud.tencent.com
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ARG NPM_REGISTRY=https://registry.npmmirror.com
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ARG UV_INDEX_URL=https://mirrors.cloud.tencent.com/pypi/simple
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# NOTE: Use HTTP (not HTTPS) for apt mirrors — OrbStack BuildKit cannot verify
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# TLS certs during build. Apt packages are GPG-signed so HTTP is safe.
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ENV DEBIAN_FRONTEND=noninteractive
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ENV TZ=Asia/Shanghai
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ENV PLAYWRIGHT_BROWSERS_PATH=/ms-playwright
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ENV PIP_INDEX_URL=${UV_INDEX_URL}
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ENV NPM_CONFIG_REGISTRY=${NPM_REGISTRY}
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WORKDIR /app
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# --- System packages for building ---
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RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
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--mount=type=cache,target=/var/lib/apt,sharing=locked \
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sed -i "s|http://deb.debian.org/debian|https://${DEBIAN_MIRROR}/debian|g" /etc/apt/sources.list.d/debian.sources \
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&& sed -i "s|http://security.debian.org/debian-security|https://${DEBIAN_MIRROR}/debian-security|g" /etc/apt/sources.list.d/debian.sources \
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sed -i "s|http://deb.debian.org/debian|http://${DEBIAN_MIRROR}/debian|g" /etc/apt/sources.list.d/debian.sources \
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&& sed -i "s|http://security.debian.org/debian-security|http://${DEBIAN_MIRROR}/debian-security|g" /etc/apt/sources.list.d/debian.sources \
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&& apt-get update \
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&& apt-get install -y --no-install-recommends curl ca-certificates python3 python3-pip tzdata xauth x11vnc novnc websockify \
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&& ln -snf /usr/share/zoneinfo/${TZ} /etc/localtime \
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&& echo ${TZ} > /etc/timezone
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&& apt-get install -y --no-install-recommends \
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python3 python3-pip python3-venv curl ca-certificates tzdata
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# --- Node dependencies (full, including devDeps for postinstall scripts) ---
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COPY apps/backend/package.json apps/backend/package-lock.json ./
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RUN --mount=type=cache,target=/root/.npm npm ci
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RUN --mount=type=cache,target=/root/.npm \
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npm ci
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# --- Prune devDependencies after install ---
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RUN npm prune --omit=dev
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# --- Playwright — install Chromium with system deps (builder has full apt) ---
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ENV PLAYWRIGHT_BROWSERS_PATH=/ms-playwright
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RUN --mount=type=cache,target=/ms-playwright-cache,sharing=locked \
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PLAYWRIGHT_BROWSERS_PATH=/ms-playwright-cache \
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PLAYWRIGHT_DOWNLOAD_HOST=https://npmmirror.com/mirrors/playwright/ \
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npx playwright install --with-deps chromium \
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&& cp -r /ms-playwright-cache /ms-playwright
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# --- Python venv for OCR worker ---
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# Use a virtual environment instead of --break-system-packages
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COPY apps/backend/subservices/ocr-worker/ ./subservices/ocr-worker/
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RUN --mount=type=cache,target=/root/.cache/pip,sharing=locked \
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python3 -m pip install --break-system-packages ./subservices/ocr-worker
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RUN python3 -m venv /app/venv \
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&& /app/venv/bin/pip install --no-cache-dir -U pip \
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&& /app/venv/bin/pip install --no-cache-dir ./subservices/ocr-worker
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# --- Copy application source ---
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COPY apps/backend/ ./
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RUN mkdir -p /app/data /app/data/browser-sessions /app/data/redeem-screenshots
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# --------------------------- Runtime Stage -----------------------------------
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FROM node:22-bookworm-slim AS runtime
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ARG DEBIAN_MIRROR=mirrors.cloud.tencent.com
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# HTTP mirrors — see builder note about OrbStack TLS
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ENV DEBIAN_FRONTEND=noninteractive
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ENV TZ=Asia/Shanghai
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ENV NODE_ENV=production
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ENV PLAYWRIGHT_BROWSERS_PATH=/ms-playwright
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ENV OCR_PROJECT_ROOT=/app/subservices/ocr-worker
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WORKDIR /app
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# --- Minimal runtime apt packages ---
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# - curl: health check (docker-compose uses `curl -fsS http://127.0.0.1:3000/health/ready`)
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# - ca-certificates: TLS for outbound HTTPS calls
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# - python3: needed by venv (links to system libpython)
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# - tzdata: timezone data for TZ=Asia/Shanghai
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# - Chromium runtime libs: minimal set for headless Chromium on slim
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RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
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--mount=type=cache,target=/var/lib/apt,sharing=locked \
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sed -i "s|http://deb.debian.org/debian|http://${DEBIAN_MIRROR}/debian|g" /etc/apt/sources.list.d/debian.sources \
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&& sed -i "s|http://security.debian.org/debian-security|http://${DEBIAN_MIRROR}/debian-security|g" /etc/apt/sources.list.d/debian.sources \
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&& apt-get update \
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&& apt-get install -y --no-install-recommends \
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curl ca-certificates python3 tzdata \
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libnss3 libnspr4 libdbus-1-3 libatk1.0-0 libatk-bridge2.0-0 \
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libcups2 libdrm2 libxkbcommon0 libatspi2.0-0 libxcomposite1 \
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libxdamage1 libxfixes3 libxrandr2 libgbm1 libpango-1.0-0 \
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libcairo2 libasound2 \
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&& ln -snf /usr/share/zoneinfo/${TZ} /etc/localtime \
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&& echo ${TZ} > /etc/timezone \
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&& apt-get clean \
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&& rm -rf /var/lib/apt/lists/*
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# --- Copy artefacts from builder ---
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# Pruned node_modules (no devDeps)
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COPY --from=builder /app/node_modules ./node_modules
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# Application source (no build step — runs directly via `node src/index.js`)
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COPY --from=builder /app/package.json ./package.json
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COPY --from=builder /app/src ./src
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COPY --from=builder /app/config ./config
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# Playwright browsers
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COPY --from=builder /ms-playwright /ms-playwright
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# Python venv for OCR worker
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COPY --from=builder /app/venv ./venv
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COPY --from=builder /app/subservices ./subservices
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# --- Non-root user for security ---
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RUN groupadd -g 1001 appuser \
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&& useradd -m -u 1001 -g appuser appuser \
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&& mkdir -p /app/data /app/data/browser-sessions /app/data/redeem-screenshots \
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&& chown -R appuser:appuser /app/data /ms-playwright
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USER appuser
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EXPOSE 3000
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