# Build stage
FROM node:20-alpine AS builder

WORKDIR /app

# Copy package files
COPY package*.json ./
RUN npm ci

# Copy source code
COPY . .

# Build TypeScript
RUN npm run build

# Production stage
FROM node:20-alpine

WORKDIR /app

# Copy package files and install production dependencies only
COPY package*.json ./
RUN npm ci --production

# Copy built files from builder
COPY --from=builder /app/dist ./dist

# Create non-root user
RUN addgroup -g 1001 -S nodejs && \
    adduser -S memory -u 1001 && \
    chown -R memory:nodejs /app

USER memory

# Expose port
EXPOSE 3000

# Health check
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
    CMD node -e "require('http').get('http://localhost:3000/health', (r) => {process.exit(r.statusCode === 200 ? 0 : 1)})"

# Start server
CMD ["node", "dist/index.js"]