registry.suse.com/suse/sle15: rpm-build not found
I'm porting a dockerised build environment to sle15.
Unlike other distros (centos, opensuse) there is no package rpm-build available. My dockerfile fails with
zypper -n install make rpm-build Refreshing service 'container-suseconnect-zypp'. Problem retrieving the repository index file for service 'container-suseconnect-zypp': [container-suseconnect-zypp|file:/usr/lib/zypp/plugins/services/container-suseconnect-zypp] Warning: Skipping service 'container-suseconnect-zypp' because of the above error. Loading repository data... Warning: No repositories defined. Operating only with the installed resolvables. Nothing can be installed. Reading installed packages... 'make' not found in package names. Trying capabilities. Package 'rpm-build' not found. No provider of 'make' found. The command '/bin/sh -c zypper -n install make rpm-build' returned a non-zero code: 104
What can I do?