Dockerfile

# Split-It API Server
# ====================
# Multi-stage build for production deployment

# Build stage
FROM node:20-alpine AS builder

WORKDIR /app

# Copy package files from server directory
COPY server/package*.json ./

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

# Production stage
FROM node:20-alpine

# Install dumb-init for proper signal handling
RUN apk add --no-cache dumb-init

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

WORKDIR /app

# Copy node_modules from builder
COPY --from=builder /app/node_modules ./node_modules

# Copy server code
COPY --chown=nodejs:nodejs server/ .

# Create logs and uploads directories with proper permissions
RUN mkdir -p logs uploads/receipts && \
    chown -R nodejs:nodejs logs uploads

# Switch to non-root user
USER nodejs

# Expose port
EXPOSE 5000

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
    CMD node -e "require('http').get('http://localhost:5000/health', r => process.exit(r.statusCode === 200 ? 0 : 1))"

# Use dumb-init to handle signals properly
ENTRYPOINT ["dumb-init", "--"]

# Start the application
CMD ["node", "server.js"]