Add .dockerignore to .Rbuildignore

[psolymos]

When using the golem::add_dockerfile() functionality, a .dockerignore is created, which is great. However, this should be added to the .Rbuildignore file as ^\.dockerignore$ otherwise R CMD check complains. This is a problem when used in an R package context and not when used running scripts, so maybe I should file this issue for {golem}, but because the dockerfiler::docker_ignore_add is responsible, I thought it belongs here.

Suggested behavior:

• check if a .Rbuildignore file exists
• if it exists, add the .dockerignore to it

Let me know what you think, and if this issue belongs here, I am happy to work on a PR.

[ColinFay]

Hey @psolymos,

thanks for this !

yes, this indeed belong here and I suppose the logic you suggested (check if there is an Rbuildignore and if yes add to it) will be the correct one.

Happy to review a PR if you want to do it :)

[psolymos]

PR #37 closes this.