`image.build` log sometimes swallows useful debug information

[Lou1415926]

As shown in the screenshot, the image.build progress displayer occasionally erases logs that happen to be useful.

I think we can:

• [ ] Fix this in the case where there are multiple image builds happening in parallel.
• [x] When there is only one image to build, remove the rolling display.

[dannyrandall]

We addressed the second item in v1.30.0, by removing the rolling display if there is only a single image to build.

[ryanc-scalegrowth]

Coming back to this topic as it's rather frustrating to debug docker build errors when building in the pipeline with multiple images. Is there any way to display docker build errors on failure in the pipeline? Even a quick and dirty workaround for now would be good.