init for demo

Change-Id: I9de14e43b257432e36218b5dba6ceaacccd4b789

app.py

@@ -9,6 +9,8 @@ os.system("python -m pip install 'git+https://github.com/facebookresearch/detect
 
 os.system("pip install git+https://github.com/cocodataset/panopticapi.git")
 
+os.system("TORCH_CUDA_ARCH_LIST='7.5' FORCE_CUDA=1 python fcclip/modeling/pixel_decoder/ops/setup.py build install")
+
 import gradio as gr
 # check pytorch installation: 
 from detectron2.utils.logger import setup_logger