Add support for Docker

[apdavison]

and other containers

[felix11h]

@apdavison what would be needed? I've played around with Sumatra running in a Docker container for a bit in the past, maybe I'm able to contribute something here.

[apdavison]

Hi @felix11h - the idea was more about Sumatra launching computations that will run inside Docker containers. (I'm sorry I didn't yet have time to add more detail to the ticket, I just wanted to create it before I forgot).

This would be somewhat similar to the machinery for launching MPI jobs with Sumatra, but would also capture additional metadata such as the ID of the Docker image, the content of the Dockerfile, the log file from docker build, etc. In principle, you could then avoid having to introspect the environment to determine the versions of dependencies.

[felix11h]

@apdavison ah, yes, I can see this being helpful! With computing on clusters in mind, Singularity might be an important container format to support besides Docker.

[babsey]

I also used Sumatra in singularity container. See this example of singularty recipes which consider Sumatra. It is quite usefull and no sudo rights is required to run it.