che #13813: Adding script for the nightly ci build

[ibuziuk]

What does this PR do?

Adding a separate script for the nightly ci build

What issues does this PR fix or reference?

eclipse-che/che#13813
the second part of the issue - Update che-devfile-registry-periodic CentOS CI job to build the devfile registry image (centos only) and tag it as nightly

[l0rd]

The script looks identical to the ci one (except for the TAG). Isn't it a way to provide the TAG as a parameter?

[ibuziuk]

@l0rd it is possible to do but this will overcomplicate the cico_build.sh in future since I plan to extend the cico_build_nightly.sh for building also https://github.com/eclipse/che-devfile-registry/tree/master/arbitrary-users-patch

In general, supporting cico scripts is not straight so I personally prefer to have distinct scripts for distinct jobs. IMO it will much simplify the support burden since for example for nightly there will be a separate job template in https://github.com/openshiftio/openshiftio-cico-jobs/blob/master/devtools-ci-index.yaml without rhel / centos TARGET (nightly is going to be done only for community)

[ibuziuk]

Related cico job PR - openshiftio/openshiftio-cico-jobs#1037

[l0rd]

Ok for me to merge