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feat: implement multi-stage Docker build for optimized Next.js production deployment

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Greg 2025-05-18 16:17:54 +02:00
parent 5d3fd4fc06
commit 0bd850b40d
1 changed files with 20 additions and 7 deletions
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Dockerfile
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@ -1,5 +1,5 @@
# Production-ready Dockerfile for Next.js
FROM node:20-alpine AS base
FROM node:20-alpine AS builder
# Set the working directory in the container
WORKDIR /app
@ -17,18 +17,31 @@ RUN npm ci
COPY myfavstuff .
# Build the Next.js application
RUN echo "--- Debugging Build Environment Variables ---" && \
echo "NEXT_PUBLIC_SUPABASE_URL as set in Dockerfile: ($NEXT_PUBLIC_SUPABASE_URL)" && \
echo "NEXT_PUBLIC_SUPABASE_ANON_KEY as set in Dockerfile: ($NEXT_PUBLIC_SUPABASE_ANON_KEY)" && \
RUN echo "--- Debugging Build Environment Variables (Builder Stage) ---" && \
echo "NEXT_PUBLIC_SUPABASE_URL: ($NEXT_PUBLIC_SUPABASE_URL)" && \
echo "NEXT_PUBLIC_SUPABASE_ANON_KEY: ($NEXT_PUBLIC_SUPABASE_ANON_KEY)" && \
echo "--- End Debugging --- " && \
npm run build
# Use a non-root user for security
RUN addgroup -g 1001 -S nodejs && adduser -S nextjs -u 1001
# Production stage
FROM node:20-alpine AS runner
WORKDIR /app
ENV NODE_ENV=production
COPY --from=builder /app/public ./public
# Next.js 15 uses a standalone output by default in the .next/standalone directory
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
USER nextjs
# Expose port 3000 (default for Next.js)
EXPOSE 3000
# Command to run the application
CMD ["npm", "start"]
ENV PORT 3000
ENV HOSTNAME 0.0.0.0
CMD ["node", "server.js"]