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

WORKDIR /usr/src/app

COPY package*.json ./

# Install all dependencies (including devDependencies for Nest CLI/tsc build)
RUN npm ci

COPY . .

# Build the project
RUN npm run build

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

WORKDIR /usr/src/app

COPY package*.json ./

# Install ONLY production dependencies
RUN npm ci --only=production

# Copy dist built artifacts
COPY --from=builder /usr/src/app/dist ./dist

# Expose NestJS default port
EXPOSE 3000

ENV NODE_ENV=production

CMD ["node", "dist/main"]
