# Backend Dockerfile for Placebo.mk NestJS API

# Build stage
FROM node:20-alpine AS builder

WORKDIR /app

# Copy package files
COPY package*.json ./
COPY package-lock.json* ./

# Install ALL dependencies (including devDependencies for build)
RUN npm ci

# Copy source code
COPY . .

# Build TypeScript
RUN npm run build

# Prune devDependencies after build
RUN npm prune --production

# Production stage
FROM node:20-alpine

WORKDIR /app

# Create non-root user
RUN addgroup -g 1001 -S nodejs && \
    adduser -S nodejs -u 1001

# Copy built application from builder stage
COPY --from=builder --chown=nodejs:nodejs /app/dist ./dist
COPY --from=builder --chown=nodejs:nodejs /app/node_modules ./node_modules
COPY --from=builder --chown=nodejs:nodejs /app/package*.json ./

# Switch to non-root user
USER nodejs

# Health check
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
  CMD node -e "require('http').get('http://localhost:3000/health', (r) => {if(r.statusCode !== 200) throw new Error()})"

# Expose port
EXPOSE 3000

# Start application
CMD ["node", "dist/main.js"]