Added 'datashield/armadillo-rserver_caravan' and 'datashield/armadillo-rserver_caravan-volcano'

[StuartWheater]

No description provided.

[mswertz]

@StuartWheater what test do you expect here? It looks good.

Do you need one of us to locally run it?

[StuartWheater]

I know little about the post "Pull Request" process as I don't have access to the Azure Pipeline results.
I have built the docker image by hand for this configuration, and put it in the Docker Hub for DataSHIELD.
That is what I have been testing.

[mswertz]

I approve the config; I noticed build is failing, is that blocking the merge?

[StuartWheater]

I can't access the "details" of the check, so don't know the reason. I suspect it could be exceeding the time limit.

[christianhilbrands]

@StuartWheater What you could try to do is to increase the timeout in the azure-pipelines.yaml. See: https://github.com/datashield/docker-armadillo-rserver-base/blob/main/azure-pipelines.yml#L9

[StuartWheater]

Yes, the timeout can be extended and number of cpus used by R increased.
I have also created a branch in my fork of the repo which is using 'make' to create the images.
Stuart