Can I disable the default builds with shell runner?


Today I noticed that my test stage is failing because some certificate error related to the default “build” before executing any command from my test stage.
I already have a custom build stage, which is pulling the code at another location with a custom git command.
Could it be possible to disable this default build feature which I don’t use and is causing the error ?
I couldn’t find a reference in the doc outside of the variable for build_dir