Docker hub rails to build an image if you call hit submodules in there. I had the problem with DirtyJTAG Dockerfile, build fine on my laptop, does not build on

Docker hub rails to build an image if you call hit submodules in there. I had the problem with DirtyJTAG Dockerfile, build fine on my laptop, does not build on Dockerhub. I mean submodules were a pain in 2010, they are still a pain in 2021. So much for 'open source'.