docker --version shows:
Docker version 18.06.1-ce, build e68fc7a
ddev version
cli v1.1.1
web drud/ddev-webserver:v1.1.0
db drud/ddev-dbserver:v1.1.0
dba drud/phpmyadmin:v1.1.0
router drud/ddev-router:v1.1.0
commit v1.1.1
domain ddev.local
ddev Documentation says: Docker version 18.03 or higher. Linux users make sure you do the post-install steps
ddev start results in an error: The docker version currently installed does not meet ddev's requirements: 17.6.2-ce is less than 18.06.0-ce
Where does that mismatch come from?
My fault!
Did an install via snap of docker first under Ubuntu 16.04 and forgot to remove it.
vagrant@drupalvm:/etc$ snap list
Name Version Rev Tracking Publisher Notes
core 16-2.34.3 5145 stable canonical core
docker 17.06.2-ce 179 stable docker-inc -
phpstorm 2018.2.2 49 stable jetbrains classic
So on startup docker 17.06 was started. After doing a restart of the docker service it was starting the correct version. Finnally I removed the snap installed one.