Docs: Added docker image build steps for Alpine
What does this MR do?
Adds the workaround for building GitLab Runner docker images based on the latest version of Alpine Linux as documented here to the runner docs
Why was this MR needed?
We need to provide customers an officially supported mechanism for building their own GitLab Runner docker images to address situations where customers may need to upgrade the OS used ahead of our planned upgrade lifecycle.
What's the best way to test this MR?
What are the relevant issue numbers?
Edited by Suzanne Selhorn