Add dark mode and theme switching functionality to the application.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 705f2157-ef97-4fbd-89e4-8c7f2ecaea90
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/7ed01c5f-a82d-405a-b728-b2e3d127c60c/69154111-0a6b-4eae-ac42-425c5260b653.jpg

Dockerfile

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+FROM node:20-alpine AS builder
+
+# Set working directory
+WORKDIR /app
+
+# Copy package.json and package-lock.json
+COPY package*.json ./
+
+# Install dependencies
+RUN npm ci
+
+# Copy project files
+COPY . .
+
+# Build the application
+RUN npm run build
+
+# Production image
+FROM node:20-alpine AS production
+
+# Set working directory
+WORKDIR /app
+
+# Set environment variables
+ENV NODE_ENV=production
+ENV PORT=5000
+
+# Copy package files
+COPY package*.json ./
+
+# Install production dependencies only
+RUN npm ci --only=production
+
+# Copy built application from builder stage
+COPY --from=builder /app/dist ./dist
+COPY --from=builder /app/node_modules/.prisma ./node_modules/.prisma
+
+# Copy migration files
+COPY --from=builder /app/migrations ./migrations
+
+# Create a non-root user and set ownership
+RUN addgroup -S appgroup && adduser -S appuser -G appgroup
+RUN chown -R appuser:appgroup /app
+
+# Switch to non-root user
+USER appuser
+
+# Expose the port the app runs on
+EXPOSE 5000
+
+# Start the application
+CMD ["node", "dist/server/index.js"]