how to run Docker in Travis hosted in travis-ci.com

Question

I am trying to run some tests in Travis CI using Docker (and docker-compose). A search on "run docker in Travis" does yield several how-to-do results, but none of these seem to be running remotely on Travis CI (travis-ci.com), instead I assume are on local Travis. The answers to the closest question I found, Can travis-ci run docker? , have not helped me so far.

The problem I encounter is that Travis CI runs Ubuntu 12.04 on an outdated kernel and installing Docker requires updating the kernel and rebooting - but 'sudo reboot' will cause the virtual machine to be destroyed and leads to an infinite cycle of [install kernel -> reboot -> install_kernel ...]

Answer 1

Just wanted to drop in a quick note that Docker support for Travis CI is now official: http://blog.travis-ci.com/2015-08-19-using-docker-on-travis-ci/

It's support Docker and Docker-compose.

Answer 2

I know it does not help you with travis-ci but I build my docker image on circle-ci. Also Circle-CI just upgraded to docker 1.6.2.

My build file can be found here: https://github.com/blacklabelops/jenkins/blob/master/circle.yml

Answer 3

https://github.com/moul/travis-docker claims support for Docker in Travis. It apparently uses User Mode Linux to achieve this. I haven't tried this yet.