Dockerfile.prod

# Production Dockerfile for CITZ SBC Queue Management
# Multi-stage build for optimal production image size

# Build stage
ARG NODE_TAG=22-bullseye-slim
FROM node:${NODE_TAG} AS builder

# Set working directory
WORKDIR /workspace

# Set environment for build
ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1

# Copy package files for dependency installation
COPY package.json ./

# Install only production dependencies needed for build
RUN npm i && npm cache clean --force

# Copy all source files
COPY . .

# Generate prisma (with dummy DATABASE_URL for CI build)
RUN DATABASE_URL="postgresql://dummy:dummy@localhost:5432/dummy" npx prisma generate

# Build the application
RUN npm run build

# Production stage
FROM node:${NODE_TAG} AS production

# Install security updates and dumb-init for proper signal handling
RUN apt-get update && apt-get install -y \
    dumb-init \
    && apt-get upgrade -y \
    && rm -rf /var/lib/apt/lists/* \
    && apt-get clean

# Create non-root user for security
RUN groupadd --gid 1001 nodejs \
    && useradd --uid 1001 --gid nodejs --shell /bin/bash --create-home nextjs

# Set working directory
WORKDIR /workspace

# Set production environment
ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1
ENV PORT=3000

# Copy built application and dependencies from builder stage
COPY --from=builder --chown=nextjs:nodejs /workspace/.next ./.next
COPY --from=builder --chown=nextjs:nodejs /workspace/public ./public
COPY --from=builder --chown=nextjs:nodejs /workspace/node_modules ./node_modules

# Copy necessary configuration files
COPY --chown=nextjs:nodejs package.json ./
COPY --chown=nextjs:nodejs next.config.ts ./
COPY --from=builder --chown=nextjs:nodejs /workspace/postcss.config.mjs ./postcss.config.mjs

# Switch to non-root user
USER nextjs

# Expose port
EXPOSE 3000

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

# Start the application
CMD ["npm", "start"]