# ---- Production Dockerfile for NestJS backend ----
# Multi-stage build: compile TypeScript, then run with minimal image

# Stage 1: Build
FROM node:20-alpine AS builder
WORKDIR /app
COPY package*.json ./
RUN npm ci
COPY . .
RUN npm run build

# Stage 2: Production
FROM node:20-alpine
WORKDIR /app

# Only install production dependencies
COPY package*.json ./
RUN npm ci --omit=dev && npm cache clean --force

# Copy compiled output from builder
COPY --from=builder /app/dist ./dist

EXPOSE 3000

# Run the compiled JS directly — no ts-node, no watch, no devDeps
CMD ["node", "dist/main"]