production configs, deployment configs and readme

Dockerfile.production

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+# Multi-stage production Dockerfile for LCC Table Tennis Booking
+FROM node:22-slim AS base
+
+# Install dependencies only when needed
+FROM base AS deps
+RUN apt-get update && apt-get install -y curl && rm -rf /var/lib/apt/lists/*
+WORKDIR /app
+
+# Install dependencies based on the preferred package manager
+COPY package.json package-lock.json* ./
+RUN \
+  if [ -f package-lock.json ]; then npm ci --ignore-scripts; \
+  else echo "Lockfile not found." && exit 1; \
+  fi
+
+# Rebuild the source code only when needed
+FROM base AS builder
+RUN apt-get update && apt-get install -y python3 make g++ && rm -rf /var/lib/apt/lists/*
+WORKDIR /app
+COPY --from=deps /app/node_modules ./node_modules
+COPY . .
+
+# Rebuild better-sqlite3 for Alpine Linux
+RUN npm rebuild better-sqlite3
+
+# Build the application
+RUN npm run build
+
+# Production image, copy all the files and run next
+FROM base AS runner
+RUN apt-get update && apt-get install -y curl && rm -rf /var/lib/apt/lists/*
+WORKDIR /app
+
+ENV NODE_ENV=production
+ENV NEXT_TELEMETRY_DISABLED=1
+
+# Create system user and group
+RUN addgroup --system --gid 1001 nodejs
+RUN adduser --system --uid 1001 nextjs
+
+# Copy necessary files from builder stage
+COPY --from=builder /app/.next/standalone ./
+COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
+
+# Create public directory if it doesn't exist
+RUN mkdir -p public
+
+# Create directories for data and backups
+RUN mkdir -p /app/data /app/backups /app/logs && \
+    chown -R nextjs:nodejs /app/data /app/backups /app/logs
+
+# Create startup script
+COPY --chown=nextjs:nodejs <<EOF /app/start.sh
+#!/bin/sh
+set -e
+echo "🚀 Starting TT Booking Production..."
+echo "🌟 Starting server..."
+exec node server.js
+EOF
+
+RUN chmod +x /app/start.sh
+
+USER nextjs
+
+EXPOSE 3000
+
+ENV PORT=3000
+ENV HOSTNAME="0.0.0.0"
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=60s --retries=3 \
+  CMD curl -f http://localhost:3000/api/health || exit 1
+
+CMD ["/app/start.sh"]