[scl.org] Can't install SCL

[Mohan Ganesalingam]

I've just been trying to install SCL (in docker's centos:6 image), like so:

docker run -it centos:6 /bin/bash
yum -y update && yum install -y centos-release-scl
scl

I get back /bin/sh: scl: command not found

I've tried looking for scl with find, with no luck. This used to work
(a few days ago)... I've been using it in CI for a while. Any help
would be much appreciated...