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# Build stage
FROM node:18-alpine AS build

# Set build arguments
ARG NODE_ENV=production
ENV NODE_ENV=${NODE_ENV}

WORKDIR /app

# Copy package files and install dependencies
COPY package*.json ./
RUN npm ci --no-audit --no-fund

# Copy source code
COPY . .

# Build the application
RUN npm run build

# Production stage
FROM node:18-alpine

WORKDIR /app

# Install wget for health check and other utilities
RUN apk --no-cache add wget curl

# Create a non-root user
RUN addgroup -S appgroup && adduser -S appuser -G appgroup

# Copy only production dependencies
COPY package*.json ./
RUN npm ci --only=production --no-audit --no-fund

# Copy built application from build stage
COPY --from=build /app/dist ./dist
COPY --from=build /app/server.cjs ./
COPY --from=build /app/api ./api

# Set environment variables
ENV NODE_ENV=production
ENV PORT=3001

# Create a directory for environment files
RUN mkdir -p /app/config

# Note: Environment variables should be passed at runtime
# Example: docker run -e GEMINI_API_KEY=your_key -e DATABASE_URL=your_url ...

# Expose the port
EXPOSE 3001

# Add health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
  CMD wget --no-verbose --tries=1 --spider http://localhost:3001/health || exit 1

# Switch to non-root user
USER appuser

# Start the server
CMD ["node", "server.cjs"]