Select engine for running build steps / build

[raphendyr]

Argo

• https://github.com/argoproj/argo
• https://blog.argoproj.io/artifacts-management-in-container-native-workflows-part-1-f6efa838666b
• https://stackshare.io/stackups/argo-vs-kubestone
• https://github.com/argoproj/argo/issues/1349

Drone.io

• https://drone.io/
• https://github.com/drone/drone