# Build stage
FROM node:20-alpine AS builder

WORKDIR /app

# Copy package files
COPY package*.json ./
COPY tsconfig.json ./

# Install dependencies
RUN npm ci

# Copy source code
COPY src ./src

# Build TypeScript
RUN npm run build

# Production stage
FROM node:20-alpine

WORKDIR /app

# Copy package files
COPY package*.json ./

# Install production dependencies only
RUN npm ci --only=production && \
    npm cache clean --force

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

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

# Change ownership
RUN chown -R appuser:appuser /app

# Switch to non-root user
USER appuser

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