Support the proprietary TALA layout engine for d2

[vfosnar]

Support the TALA layout engine.

This would require mounting a volume for the license key to be automatically renewable.

[ggrossetie]

This is mostly a documentation issue to explain how to support it?
I guess the right way is to extend the base image and install the proprietary layout engine.

[vfosnar]

I think a better way is to always install it. Then, depending on configuration, allow users to use it or not.

[ggrossetie]

I think a better way is to always install it

I don't think we are allow to do that according to the Terms and Conditions of Terrastruct:

Customer shall not (and shall not permit others to): (i) license, sub-license, sell, transfer, distribute or share the Services or Software or make any of them available for access by third parties; (...)

https://terrastruct.com/terms-and-conditions/

@alixander Would you be kind enough to provide us with a clear answer regarding what is allowed or not from a licensing perspective? Thanks!

[vfosnar]

This should be okay if it isn't enabled on the public instance, as it isn't distributing anything (except for the bundled binary).

We'll see