git+https://github.com/facebookresearch/detectron2.git

app.py

@@ -1,5 +1,5 @@
 import os
-os.system('pip install detectron2 -f https://dl.fbaipublicfiles.com/detectron2/wheels/cu102/torch1.9/index.html')
+os.system('pip install detectron2 -e git+https://github.com/facebookresearch/detectron2.git')
 os.system("git clone https://github.com/microsoft/unilm.git")
 
 import sys