Docker installed but EE4 thinks it is not installed


#1

EDIT: I have found the issue. OpenVZs shared kernel I am using does not support Module Overlay, which Docker needs to run. Moving to a KVM fixed my issues.

On both OpenVZ servers I have running Ubuntu 16.04 I get the same error. Docker is installed, but EE believes it is not.

Error: Docker not installed or not running.
root@allthingsnerd:~# docker -v
Docker version 18.09.0, build 4d60db4

Output from ee cli info

+-------------------+---------------------------------------------------------------------+
| OS                | Linux 2.6.32-042stab127.2 #1 SMP Thu Jan 4 16:41:44 MSK 2018 x86_64 |
| Shell             | /bin/bash                                                           |
| PHP binary        | /usr/bin/php7.2                                                     |
| PHP version       | 7.2.13-1+ubuntu16.04.1+deb.sury.org+1                               |
| php.ini used      | /etc/php/7.2/cli/php.ini                                            |
| EE root dir       | phar://ee.phar                                                      |
| EE vendor dir     | phar://ee.phar/vendor                                               |
| EE phar path      | /root                                                               |
| EE packages dir   |                                                                     |
| EE global config  | /opt/easyengine/config/config.yml                                   |
| EE project config |                                                                     |
| EE version        | 4.0.9                                                               |
+-------------------+---------------------------------------------------------------------+

Output from lsb_release -a

|LSB Version:|core-9.20160110ubuntu0.2-amd64:core-9.20160110ubuntu0.2-noarch:security-9.20160110ubuntu0.2-amd64:security-9.20160110ubuntu0.2-noarch|
|---|---|
|Distributor ID:|Ubuntu|
|Description:|Ubuntu 16.04.5 LTS|
|Release:|16.04|
|Codename:|xenial|