Update Dockerfile

Dockerfile

@@ -38,4 +38,4 @@ COPY --chown=user . $HOME/app
 # RUN unzip -oq img_align_celeba.zip | tqdm --desc extracted --unit files --unit_scale --total $n_files > /dev/null
 RUN unzip -q img_align_celeba.zip 
 
-CMD ["python", "app.py", "--port", "7860"]
+CMD ["python", "main.py"]