tree 1ace0bfd616105c14e7c87dc5a7bb3b7028fe182
parent 5a23406f6959384e3edc402eaf9c271648195786
author David Crawshaw <david@zentus.com> 1746458836 -0700
committer David Crawshaw <david@zentus.com> 1746458837 -0700

dockerimg: use --progress=quiet to always show docker build failure

In non-verbose mode, --progress=quiet is very quiet when everything
works, but prints an actual error when something fails (e.g. the
dockerfile is bad or you ran out of space).

While here, remove the partial stdout/stderr plumbing that did not
quite work (because the code sometimes used os.Stdout/os.Stderr
directly).

For #37
For #41