Hi Vipin vijay, It seems there is something wrong with the latest detectron cpu version with my docker image. I tried the same code in my github repo and got segmentation fault as well. I’d say try to build the image with the below specs and it should work. The main change is to pick a different base image. Unfortunately, I haven’t yet tried the full workflow but will get to that later and update the post/repo.

FROM ubuntu:18.04
RUN apt-get update -y
RUN apt -y upgrade
# gcc compiler
RUN apt-get -y install git build-essential libglib2.0-0 libsm6 libxext6 libxrender-dev nano
RUN apt install -y python3-pip
# Detectron2 prerequisites
RUN pip3 install torch==1.6.0+cpu torchvision==0.7.0+cpu -f https://download.pytorch.org/whl/torch_stable.html
RUN pip3 install cython
RUN pip3 install -U 'git+https://github.com/cocodataset/cocoapi.git#subdirectory=PythonAPI'
# Detectron2 - CPU copy
RUN python3 -m pip install detectron2==0.2.1 -f https://dl.fbaipublicfiles.com/detectron2/wheels/cpu/torch1.6/index.html
# Development packages
RUN pip3 install flask flask-cors requests