Can't run the launcher to install Discourse on CentOS 7

[ansenxz (ansenlee)]

try
systemctl start docker.service

[AstonJ]

In case anyone finds it handy in future:

How to set up Discourse on a server with existing Apache sites

Install Docker

I used the CentOS guide here: https://docs.docker.com/installation/centos (you only need to go as far as installing docker - you don’t need to pull any images)

Then start it, and set it to start on boot.

[jonnymccullagh]

On CentOS 7 try linking the non-existent docker.io binary to the existing docker binary as follows:
ln -s /usr/bin/docker /usr/bin/docker.io

[awfulcitizen]

This did it for me just now…

[Quintin_Par]

Worked. Somehow this should come up as the right answer.

[Dan_Healy]

Exactly. If it says docker isn’t running, just do a service docker start and move on. That’s what I did.