R TabExercise cannot be run without installing dplyr in requirements.sh

[machow]

Feel free to close, if not an issue :). A reader who copies the R TabExercise example into Teach will see the following.

They would need to install dplyr in their requirements.sh to get the exercise to run. It might be helpful to either

1. modify the example so that it can run with the base R packages, or
2. change the base package to include dplyr

option (2) is probably part of a bigger discussion with @rv2e (maybe as a content-tech-request?)

[ramnathv]

@machow Good point. To make sure I understand, you are suggesting that the example provided only use packages that ship with our base Docker image so that they can be copy-pasted without issues?

[machow]

@ramnathv that's right. I suspect that if a user pastes in the example, and it doesn't run, they will get confused / frustrated.

The authoring docs are super convenient, it's been really helpful being able to navigate here as a point of entry for examples!