Docker is not installed when running RHEL

[kersten1]

Summary
When installing the CLI tools on my RHEL system, I get this message:

[install_docker] Installing/updating external dependency: docker
which: no docker in (/usr/lib64/qt-3.3/bin:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin:/opt/ibm/c4eb/bin:/home/kersten/.local/bin:/home/kersten/bin:/usr/kerberos/bin)
[sudo] password for kersten:

Executing docker install script, commit: 2f4ae48

WARNING: rhel is now only supported by Docker EE
Check https://store.docker.com for information on Docker EE

[install_docker] Please review any setup requirements for 'docker' from: https://docs.docker.com/engine/installation/
bash: line 285: docker: command not found

Obviously, I can install docker from URLs provided, but would be nice if this were to run on RHEL without any other intervention from me - especially since we are starting to work with OpenShift.

Steps to reproduce
(include tooling version, platform, etc)

1. Run this command: curl -sL https://ibm.biz/idt-installer | bash

Operating System
Specify: Linux Red Hat 7

Supporting details
(Logs, stack traces, images, etc. Wrap in <detail> ... </detail> tags as appropriate)

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Development "done" checklist

• Test case to verify
• Public Documentation updated
• Change added to "release notes" as appropropriate
• Notification to stakeholders (OM, other squads, etc)

[steveclay]

The tool invokes a Docker URL to do the install. We've had another report that for RHEL the script from docker.com is actually failing.

[ddb4github]

Reference to docker/docker-install#190

[ddb4github]

How about skip docker installation for RHEL 7.x?