Update app.py

app.py

@@ -7,9 +7,11 @@ subprocess.run(
         "pip install ./nvdiffrast-0.3.1.torch-cp310-cp310-linux_x86_64.whl --force-reinstall --no-deps"
     )
 )
+target_path = "/root/.cache/torch_extensions/py310_cu121"
+os.makedirs(target_path, exist_ok=False)
 subprocess.run(
     shlex.split(
-        "pip install ./renderutils_plugin-1.0-cp310-cp310-linux_x86_64.whl --force-reinstall --no-deps"
+        "pip install ./renderutils_plugin-1.0-cp310-cp310-linux_x86_64.whl --target {target_path} --force-reinstall --no-deps"
     )
 )
 # os.environ["CXX"] = os.popen("which g++").read().strip()