# Use Node.js 20 Alpine for smaller image size
FROM node:20-alpine AS builder

# Set working directory
WORKDIR /app

# Copy package files
COPY package*.json ./

# Install all dependencies (including dev dependencies for build)
RUN npm ci

# Copy source code
COPY . .

# Build the application
RUN npm run build

# Production stage
FROM node:20-alpine AS production

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

# Create app user for security
RUN addgroup -g 1001 -S nodejs
RUN adduser -S nodejs -u 1001

# Set working directory
WORKDIR /app

# Copy package files
COPY package*.json ./

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

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

# Copy service account key (if needed for GCS)
COPY serviceAccountKey.json ./

# Change ownership to nodejs user
RUN chown -R nodejs:nodejs /app

# Switch to nodejs user
USER nodejs

# Expose port
EXPOSE 8080

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

# Start the application
CMD ["node", "--max-old-space-size=8192", "--expose-gc", "dist/index.js"]