I ran into the same problem on debian wheezy. It seems that the docker storage driver AUFS and debian 8 do not fit together.
The solition is to change the docker storage driver, e.g. to lvm. To do that you have to change the driver in the docker service file. Under Debian 8 proceed as follows (as root user in this example):
[EDIT] The solution I initially posted still should work fine for anybody using it, but as you can read below @Andreas_Fuchs made me rethink and revisit this solution. Using - and getting used to - systemd the recommended solution is to use a drop-in configuration file. To do so proceed as follows:
first get the current ExecStart form your docker.service file:
grep ExecStart /lib/systemd/system/docker.service
the result is something like this:
ExecStart=/usr/bin/dockerd -H fd://
now use this result to create a systemd docker drop-in configuration file. Create the service directory first therefore as well:
The file now must contain the following lines:
ExecStart=/usr/bin/dockerd --storage-driver=devicemapper -H fd://
remove your old container (shamelessly stolen from @Andreas_Fuchs's post below )
docker ps (to get the id)
docker stop [id]
docker rm [id]
restart systemd, docker and your container
systemctl restart docker.service
docker run -t -d -p 127.0.0.1:9980:9980 -e 'domain=YOUR.CLOUD.COM' --restart always --cap-add MKNOD collabora/code
This last command also starts a download of the collabora container. Changing the storage driver also removes the according aufs folder in the docker /lib folder and all contents.
Hope this helps others running into this problem.
Anyone who has a more complex docker setup and wants to adapt this solution should take a look here: https://docs.docker.com/engine/articles/systemd/