build-iso fails when run in parallel

[Scott Little]

If a user is working on two independent workspaces, it should be possible to run build-iso within each workspace at the same time. In practice the yum,repoquery,createrepo commands used from within build-iso will all be using a common /var/tmp/$USER working directory. They will pollute each-others cache, and one or both will fail.

Suggested solution is to set TMPDIR=$MY_WORKSPACE/tmp prior to invoking anything in the yum,repoquery,createrepo family of commands. Probably need to do make this setting in all StarlingX build-* commands.

Alternatively, set it as an exported environment variable.

[Ghada Khalil (gkhalil)]

Marking as low / not gating - not a very likely scenario