Deis containers are instances of Docker containers used to run Applications. Containers perform the actual work of an Application by servicing requests or by running background tasks as part of the cluster.
Each container gets its own ephemeral filesystem, with a fresh copy of the most recently deployed code. During the container’s lifetime, its running processes can use the filesystem as a temporary scratchpad, but no files that are written are visible to processes in any other container. Any files written to the ephemeral filesystem will be discarded the moment the container is either stopped or restarted.
There are several states that a container can be in at any time. The states are: