Please, read the public documentation web site:
Docker container to build the oc.pyos image
oc.pyos depend pyos submodule in /var directory
[submodule "var/pyos"]
path = var/pyos
url = https://github.com/abcdesktopio/pyos.git
branch = main
git clone --recurse-submodules https://github.com/abcdesktopio/oc.pyos.git
docker build -t abcdesktopio/oc.pyos -f oc.pyos .