Add a warning to pipeline page for DSL1 pipelines

[ewels]

We know on the pipeline health page whether a pipeline is DSL1 or DSL2 (check for modules directory). It would be good to show a warning on pipeline pages (old versions, pipelines that haven't been updated yet) flagging that a pipeline is DSL1.

We can suggest using a -dsl1 flag and mention using older versions of Nextflow when DSL1 support is gone.

[sofiahag]

Ah, right, so the pipeline health page is also just an iframe from the old site. Guess this will be re-written to the new page in the future. Maybe put this on hold until then?

Code: https://github.com/nf-core/website/blob/d71a3ca3835139b4e285157f057fecd8028bfd52/src/pages/pipeline_health.astro#L6

[joaquimgamero]

hey folks, wondering if I can help pushing this during hackathon, @sofiahag are you around? 👀 Otherwise @mashehu I might give this a go aswell

[joaquimgamero]

@alvaromartmart is working on revamping the pipeline health page and is adding a is_DSL2 flag so looks like we've got a proper setting to work on this! 🥳

https://github.com/nf-core/website/blob/a7f9986ff594e3cb93be79d5440d6075c26443d9/bin/pipelines.json.js#L181-L182