Adding copy button to code snippets

[aguschin]

In the code snippets, there is no button to copy the code. This is usually a very useful feature. I mean code snippets in docs. This is the example from Terraform docs:

I guess this should be added to the common docs-engine and introduced to dvc.org/doc and cml.dev/doc as well.

One thing to note is that for shell code snippets we always add $ at the beginning of the line. It shouldn't be copied. Also those scripts usually have some output, it shouldn't be copied also:

For python snippets, AFAIK, we don't add any outputs, so those should be copied in full. The same goes for yaml snippets.

cc @rogermparent

[julieg18]

This is in discussion in dvc.org#3528! Should we close this issue and continue the discussion there?

[aguschin]

Sure, thank you! Didn't find that one.

[jorgeorpinel]

Or/and move that dvc.org issue to a feature request in https://github.com/iterative/gatsby-theme-iterative 🙂