The after_script in bob.devtools CI instructions is broken

This line: https://gitlab.idiap.ch/bob/bob.devtools/-/blob/dfa4a19a4d2088e9f6e5019ab44c94097d33e78f/.gitlab-ci.yml#L181

Does not work in the CI and silently fails. You can see it in: https://gitlab.idiap.ch/bob/bob.devtools/-/jobs/272337#L675

$ bdt ci clean -vv
/usr/bin/bash: line 129: bdt: command not found