Add Docker configuration for port 3500

- Add Dockerfile with multi-stage build for production
- Add docker-compose.yml for easy deployment
- Add .dockerignore to exclude unnecessary files
- Add DOCKER_SETUP.md with comprehensive setup guide
- Update next.config.js to enable standalone output mode
- Configure app to run on port 3500
- Keep MySQL server external to Docker

Dockerfile

@@ -0,0 +1,50 @@
+# Use Node.js LTS version
+FROM node:20-alpine AS base
+
+# Install dependencies only when needed
+FROM base AS deps
+RUN apk add --no-cache libc6-compat
+WORKDIR /app
+
+# Copy package files
+COPY package.json package-lock.json* ./
+RUN npm ci
+
+# Rebuild the source code only when needed
+FROM base AS builder
+WORKDIR /app
+COPY --from=deps /app/node_modules ./node_modules
+COPY . .
+
+# Generate Prisma Client
+RUN npx prisma generate
+
+# Build Next.js application
+ENV NEXT_TELEMETRY_DISABLED 1
+RUN npm run build
+
+# Production image, copy all the files and run next
+FROM base AS runner
+WORKDIR /app
+
+ENV NODE_ENV production
+ENV NEXT_TELEMETRY_DISABLED 1
+
+RUN addgroup --system --gid 1001 nodejs
+RUN adduser --system --uid 1001 nextjs
+
+# Copy necessary files
+COPY --from=builder /app/public ./public
+COPY --from=builder /app/.next/standalone ./
+COPY --from=builder /app/.next/static ./.next/static
+COPY --from=builder /app/node_modules/.prisma ./node_modules/.prisma
+COPY --from=builder /app/prisma ./prisma
+
+USER nextjs
+
+EXPOSE 3500
+
+ENV PORT 3500
+ENV HOSTNAME "0.0.0.0"
+
+CMD ["node", "server.js"]