I was confused for ~15 minutes today when updating to using the yarn
plugin. It was failing in docker but not locally, and I didn't know why.
It turned out to be because I forgot to copy the backstage.json into the
docker image. This was confusing, because the error seemed to indicate I
was failing the semver checks. This change propagates error detail down
the line, so people will see the actual cause. (i.e. missing file, no
version field, semver wrong)
Signed-off-by: Riley Martine <rmartine@integralads.com>
Riley Martine
6474b04936