Dockerfile Generator for Node.js

# Stage 1: Dependencies
FROM node:20-alpine AS deps
RUN apk add --no-cache libc6-compat
WORKDIR /app
COPY package.json package-lock.json ./
RUN npm ci --only=production

# Stage 2: Builder
FROM node:20-alpine AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .
RUN npm run build

# Stage 3: Runner
FROM node:20-alpine AS runner
WORKDIR /app
ENV NODE_ENV production
RUN addgroup --system --gid 1001 nodejs
RUN adduser --system --uid 1001 nodeuser
COPY --from=builder /app/node_modules ./node_modules
COPY --from=builder /app/dist ./dist
COPY --from=builder /app/package.json ./
USER nodeuser
EXPOSE 3000
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
  CMD wget -qO- http://localhost:3000/health || exit 1
CMD ["npm", "start"]

node_modules
npm-debug.log
yarn-debug.log
yarn-error.log
.pnpm-debug.log
.git
.gitignore
.env
.env.local
.env.development
.env.production
.env*.local
*.log
*.md
.DS_Store
.idea
.vscode
coverage
.nyc_output
dist
build
.next
out
.turbo
Dockerfile
.dockerignore
docker-compose*.yml
.github
tests
__tests__
*.test.js
*.test.ts
*.spec.js
*.spec.ts