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2026-09-02 23:02:01 +02:00

86 lines
2.4 KiB
Docker

# ============================================
# Stage 1: Dependencies Installation Stage
# ============================================
# IMPORTANT: Node.js Version Maintenance
# This Dockerfile uses Node.js 24.13.0-slim, which was the latest LTS version at the time of writing.
# To ensure security and compatibility, regularly update the NODE_VERSION ARG to the latest LTS version.
ARG NODE_VERSION=24.19.0-slim
FROM node:${NODE_VERSION} AS dependencies
# Set working directory
WORKDIR /app
# Copy package-related files first to leverage Docker's caching mechanism
COPY package.json package-lock.json ./
# Install project dependencies with frozen lockfile for reproducible builds
RUN --mount=type=cache,target=/root/.npm \
if [ -f package-lock.json ]; then \
npm ci --no-audit --no-fund; \
else \
echo "No lockfile found." && exit 1; \
fi
# ============================================
# Stage 2: Build Next.js application in standalone mode
# ============================================
FROM node:${NODE_VERSION} AS builder
# Set working directory
WORKDIR /app
# Copy project dependencies from dependencies stage
COPY --from=dependencies /app/node_modules ./node_modules
# Copy application source code
COPY . .
ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1
# Build Next.js application
RUN --mount=type=cache,target=/app/.next/cache \
if [ -f package-lock.json ]; then \
npm run build; \
else \
echo "No lockfile found." && exit 1; \
fi
# ============================================
# Stage 3: Run Next.js application
# ============================================
FROM node:${NODE_VERSION} AS runner
# Set working directory
WORKDIR /app
# Set production environment variables
ENV NODE_ENV=production
ENV PORT=3000
ENV HOSTNAME="0.0.0.0"
ENV NEXT_TELEMETRY_DISABLED=1
# Copy production assets
COPY --from=builder --chown=node:node /app/public ./public
# Set the correct permission for prerender cache
RUN mkdir .next
RUN chown node:node .next
# Automatically leverage output traces to reduce image size
# https://nextjs.org/docs/advanced-features/output-file-tracing
COPY --from=builder --chown=node:node /app/.next/standalone ./
COPY --from=builder --chown=node:node /app/.next/static ./.next/static
# Switch to non-root user for security best practices
USER node
# Expose port 3000 to allow HTTP traffic
EXPOSE 3000
# Start Next.js standalone server
CMD ["node", "server.js"]