I've been using centos dockers for a while to build images.

With the latest Centos update 7.2.1511 to the docker images, I am no longer able to build rpm packages without manually installing which.

I get an error similar to this

rpmbuild -ba /home/dev/rpmbuild/SPECS/re2c.spec

sh: which: command not found

Executing(%prep): -e /var/tmp/rpm-tmp.9WC5EP

error: Exec of /var/tmp/rpm-tmp.9WC5EP failed (%prep): No such file or directory

error: Bad exit status from /var/tmp/rpm-tmp.9WC5EP (%prep)

RPM build errors:

Bad exit status from /var/tmp/rpm-tmp.9WC5EP (%prep)

No matter how simple my spec is...

I can run "sh /var/tmp/rpm-tmp.9WC5EP" without issue. So I'm still not 100% sure where the problem REALLY lies.

The only packages I've installed is

yum groupinstall "Development Tools"

My question is where is the error, and where can I file/view a bug report? Should rpm-build from https://git.centos.org/summary/?r=rpms/rpm have "Requires: which" for the build package? Or is which supposed to be in "Development tools", or am I just doing this all wrong?

Thanks