The installation process only takes Debian-based distributions into account. It can be installed on RedHat-derived distributions using
rpm (CentOS, Fedora, RedHat, RHEL, SuSE) using
this procedure if you have
yum or
this procedure using
zypper.
Also notice that for RHEL (the enterprise version of RedHat) and SLES (the enterprise version of SuSE) only Docker EE (Enterprise Edition) is supported. It is entirely possible to install the CE versions (i.e. for test purposes) but of course this voids all support from RedHat, SuSE, etc..
bakunin