FROM node:20-alpine

# Install docker CLI for health checks
RUN apk add --no-cache docker-cli

WORKDIR /app

# Copy package files
COPY package*.json ./

# Install dependencies
RUN npm install

# Copy source code
COPY . .

# Build TypeScript
RUN npm run build

# Expose port
EXPOSE 3005

# Health check
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
  CMD wget -q -O /dev/null http://127.0.0.1:3005/health || exit 1

# Start server
CMD ["npm", "start"]