Feature request: support 'remote' PlantUML via Docker

[ghost]

Prerequisites

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Description

Hi MatheusAze,
this is not a bug issue but a 'feature request' :-).

There is a neat PlantUML docker image available at https://hub.docker.com/r/plantuml/plantuml-server/, it's easy to run a PlantUML 'server' instance. Update of PlantUML becomes easy (well, easier) by just "docker image pull plantuml/plantuml-server" and to re-run PlantUML as container.

What about rendering via a 'remote' instance of PlantUML? I don't know much about internal plantuml-toolkit mechanism to execute PlantUML. But maybe there is a easy way to implement this feature as an alternative way to render a picture and to intro a new setting "PLANTUML_URL" to make it customizable?!

Steps to Reproduce

n/a

Expected behavior: Use a PlantUML instance via a remote API call, rather than local exec.

Actual behavior: n/a

Reproduces how often: n/a

Versions

HEAD

Additional Information

http://www.plantuml.com/plantuml/png/oorFpInEIanMqBLJy4qioKWjBNQiIbMmKl18pSd9rr78oqnELIZ9LyXDJIrHgCmlLGG0

[MatheusAze]

Hi @mweisbac!
It is probably very possible to use a remote server to render the diagrams, but it would require rebuilding the toolkit's rendering mechanism from scratch (current version uses the rendering mechanism built by @peele in plantuml-preview package, which very tightly coupled to the local rendering approach).
I'd be happy to do it, but I won't have the time nor resources to do it for at least a couple of months (hence my late response).
If you are willing to contribute, I'd gladly accept a pull request for it (: