Be able to configure the docker directory to use when building

[oalyman]

Is your feature request related to a problem? Please describe.
Currently the --from-dir for oc start-build in stageStartOpenshiftBuild.groovy is fixed to docker.
Some build tools already generate a docker directory including a Dockerfile.
Currently, I need to copy stuff over to the docker directory.
Additionally, If I choose to use a PV for my build I would need to take care of cleaning up the docker directory again.
Being able to set the docker directory to use one would have more flexibility and might reduce copy/cleanup logic.

Describe the solution you'd like
It would be nice if I could configure the directory used for --from-dir.

Describe alternatives you've considered
none

Additional context
none

[michaelsauter]

Agree, might be good not to hardcode. On the other hand, it is kind of nice to have a "ODS way of doing things", so that when I am new to a repo which is deployed using ODS, I know where to look. docker folder will be where my Dockerfile is.

[oalyman]

One doesn't exclude the other.
I just want to copy the static handwritten Dockerfile from the docker folder to the configured docker folder of my build tool which contains generated files / directories for the docker image.
This way I benefit from automatic cleanup when doing a clean build.