support non-java based pipelines on OpenShift Online when there's no docker socket

[jstrachan]

our current pipelines for nodejs, docker, php, swift, ruby, python and .Net all assume docker builds as they use docker ONBUILD.

When running on OpenShift Online / OpenShift Dedicated thats not available any more.

So we need to update our pipelines to either:

• switch dynamically to the canonical S2I build for the language (maybe installing it on the fly if its not installed?)
• try use imagebuilder?

[rawlingsj]

yeah I'd love to hear if we can use imagebuilder

[pradeepto]

I guess this can be closed now that we will Dockerfile build support from OSO. WDYT?

[jstrachan]

how about we leave this issue open until we've verified a .NET or Python build works with the current pipeline on OSO?