Fix: Copy all source files in Dockerfile builder stage

Dockerfile

@@ -3,9 +3,8 @@ FROM node:20-alpine AS builder
 
 WORKDIR /app
 
-# Copy dependency files
-COPY package*.json tsconfig.json vite.config.ts server.ts ./
-COPY src/ ./src/
+# Copy all source files
+COPY . .
 
 # Install dependencies and build the app
 RUN npm install