Ability to skip host key checking for private repositories in docker

[ghost]

Feature Request

Feature description :
I'm having problems cloning features private repository when passing a private key to docker run command in CICD due to Host key verification failed. error.

Suggested Solution description ( if you have any ) :
I would like to have a flag to skip host key checking when running in docker.

https://gitpython.readthedocs.io/en/stable/tutorial.html?highlight=Key%20Checking#handling-remotes

Describe alternatives you've considered :
I've considered putting features into public repository, but not everything can be made public.

For now, as a workaround I built a custom Docker image adding this:

RUN echo "Host *" >> /etc/ssh/ssh_config
RUN echo " StrictHostKeyChecking no" >> /etc/ssh/ssh_config

Additional context :

[ghost]

Opened a PR #477