Update Dockerfile for correct directory structure

Dockerfile

@@ -10,11 +10,11 @@ WORKDIR /app
 # Copy the entire project into the container
 COPY . .
 
-# Change to the dify/docker directory
-WORKDIR /app/dify/docker
+# Change to the dify-main/docker directory
+WORKDIR /app/dify-main/docker
 
 # Copy the example environment file from the correct location
-RUN cp /app/dify/docker/.env.example .env
+RUN cp .env.example .env
 
 # Run Docker Compose to build and start the services
 CMD ["docker-compose", "up", "-d"]