Add a Dockerfile to support silq in a container

[j6k4m8]

This PR adds a Silq Dockerfile to support running Silq experiments inside of a container. It doesn't add anything to the overhead of the codebase, and clones the latest from this repository when built (i.e., is not version-pinned, but will always be up-to-date).

I have been using this for a little while and saw #24, and thought I'd contribute. Feel free to close if you prefer not to have this in the repository!

[tgehr]

Is there a reason this installs ldc? (dependencies-release.sh automatically fetches a compatible version of ldc into a local folder.)

[j6k4m8]

Hi @tgehr — sorry for the delay here! I tried originally without this explicit installation line and it looked like the install was missing ldmd2:

./build-release.sh: line 18: ldmd2: command not found

I will confess that I'm completely new to Dlang so it's possible that this is just an alias for a tool that I do have in the container... I'm just not quite sure :) With the ldc install added here, it does indeed succeed.

[tgehr]

Thanks! I wanted to do this myself but did not get around to it. This is what I have been using for a project that is set up almost the same way as Silq (Silq was forked from it):
https://github.com/eth-sri/psi/blob/master/Dockerfile

I don't regularly run docker so I might have done something silly, but maybe you can have a look there for inspiration. Also, the documentation would need to be updated, e.g. like this:
https://github.com/eth-sri/psi/blob/master/README.md