# Dockerfile für Node.js Proxy Server
FROM node:18-alpine

WORKDIR /app

# Copy package files
COPY package*.json ./

# Install dependencies (omit dev; no lockfile required)
RUN npm install --omit=dev

# Copy application code
COPY server.js ./

# 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)})"

# Run as non-root user
USER node

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