Add docker

Dockerfile

@@ -0,0 +1,39 @@
+# Base image
+FROM node:22-alpine AS builder
+
+ARG NODE_ENV=production
+ARG MONGODB_URI
+ARG MONGODB_DB
+
+# Create app directory
+WORKDIR /app
+
+# Install dependencies
+COPY package.json package-lock.json* ./
+RUN npm ci
+
+# Copy the rest of the application
+COPY . .
+
+# Build the app
+RUN npm run build
+
+# Production image
+FROM node:22-alpine AS runner
+
+WORKDIR /app
+
+# Copy only necessary files
+COPY --from=builder /app/package.json ./
+COPY --from=builder /app/.next .next
+COPY --from=builder /app/public ./public
+COPY --from=builder /app/node_modules ./node_modules
+COPY --from=builder /app/next.config.ts ./
+
+# Set environment variables (optional)
+
+# Expose port
+EXPOSE 3000
+
+# Start the application
+CMD ["npm", "start"]