Dockerfile Generator

# ---- Build Stage ----
FROM node:20-alpine AS builder

WORKDIR /app

# Copy dependency manifests
COPY package*.json ./

# Install dependencies
RUN npm ci --only=production

# Copy source code
COPY . .

# Build
RUN npm run build

# ---- Production Stage ----
FROM node:20-alpine

WORKDIR /app

COPY --from=builder /app .

ENV NODE_ENV=production

EXPOSE 3000

# Run as non-root user
RUN addgroup -g 1001 -S appuser && adduser -S appuser -u 1001
USER appuser

LABEL maintainer="you@example.com"
LABEL version="1.0"

CMD ["node", "dist/index.js"]