Update Dockerfile

Dockerfile

@@ -18,7 +18,7 @@ RUN pip install --no-cache-dir -r requirements.txt
 RUN mkdir -p /app/translated && chmod 777 /app/translated
 
 # 设置环境变量
-ENV PORT=8888
+ENV PORT=7860
 ENV OPENAI_BASE_URL=""
 ENV OPENAI_MODEL=""
 ENV OPENAI_API_KEY=""