More requirements for Puppet

docs/koji/bootstrapping.md

@@ -364,6 +364,8 @@ These packages will be needed for openafs:
    * [`cern-yum-tool`](https://gitlab.cern.ch/linuxsupport/rpms/cern-yum-tool)
    * [`openafs-release`](https://gitlab.cern.ch/linuxsupport/rpms/releases/openafs-release)
 
+Once you get to the Puppet part, you'll also need these RPMs:
+   * [`cern-krb5-conf`](https://gitlab.cern.ch/linuxsupport/rpms/cern-krb5-conf)
 
 ## Create tag for openafs
 
@@ -456,6 +458,12 @@ Now you can start creating other tags as necessary. It's probably a good idea
 to start with `myrpm` (for testing `rpmci`), `linuxsupport` (for our packages)
 and probably `config` (for Configuration Management stuff).
 
+The `config` tag is a bit special because it is used very early on in the puppetinit.
+In order to avoid hardcoding the URLs for the repos, we provide a .repo file
+in a well-known location: `http://linuxsoft.cern.ch/internal/repos/configX.repo`.
+Take a look at [this one](http://linuxsoft.cern.ch/internal/repos/config8s.repo) and
+modify it as necessary.
+
 ## Build a Docker image
 
 You'll need a Docker image for many things, starting with `rpmci`. You've gotten