Updating docs to reflect LayerCI changes to webapp.io

[joshuadsouza]

LayerCI rebranded to webapp.io, context here: https://webapp.io/blog/layerci-has-rebranded-to-webapp-io/

This PR does the following:

• Removes the stale example referencing LayerCI
• References the correct documentation for the Cypress example with webapp.io
• Adding a note that Cypress versions less than 3.15.0 will need to manually provide the CI ENVs to correctly send their SCM to the Cloud (Re: misc: Replace LayerCI reference with Webapp.io cypress#28577 (comment))

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[cypress-app-bot]

• Create a Draft Pull Request if your PR is not ready for review. Mark the PR as Ready for Review when you're ready for a Cypress team member to review the PR.

[MikeMcC399]

• The example repo https://github.com/webappio/react-e2e-example is based on the legacy Cypress version cypress@9.4.1. Are there any plans to update this example to a current Cypress 13.x version?
• Ubuntu 18.04 used in the Layerfile is past end of life and no longer supported by Cypress (see Operating System).
• The images on https://docs.webapp.io/integrations/cypress are not currently displaying e.g. https://webapp.io/static/assets/docs/cypress/sign-up.png HTTP 504 Gateway timeout error Edit: today they are displaying
• https://docs.webapp.io/integrations/cypress shows Node.js 14 in the example. This version is end-of-life. The earliest version supported is Node.js 18.

[jennifer-shehane]

@MikeMcC399 Good point outs. We can address those concerns seperately.

[jennifer-shehane]

This is not a valid Cypress version. I'm not sure what @emilyrohrbough was trying to convey in their original comment. I think she meant the version that this is released in? cypress-io/cypress#28577 (comment)

[MikeMcC399]

The latest Cypress 3.x version released was cypress@3.8.3 in Jan 2020, so I would not have thought it is necessary to draw attention to such an old and legacy version.

With the exception of the Configuration (Legacy) page and the Migration Guide it is more or less assumed that the user has at the minimum Cypress 10.x if not Cypress 13.x running.

[jennifer-shehane]

@joshuadsouza are you able to make these updates?

[ianwalter]

The whole point of me asking for this update was so that we don't have to specify --ci-build-id on the cypress command, but if I upgrade to 13.6.5 and remove the flag in Webapp.io, I get the error:

{
  "message": "CI Build ID could not be generated and was not specified.",
  "code": "INDETERMINATE_CI_BUILD_ID"
}

@jennifer-shehane Could we perhaps setup a cloud account for Webapp.io for testing purposes and then @joshuadsouza could update the example above to use the --record flag and thus verify that this integration works as expected with Cypress Cloud?

I'm really trying to remove the use of --ci-build-id because it makes the command non-deterministic and messes up the content-aware caching I'm trying to setup with Turborepo.

[jennifer-shehane]

@ianwalter Could you open a new issue in the cypress repo? I think we may need to make a Cloud change to address this, but it won't be tracked well as a comment in this PR.

[ianwalter]

Will do, thanks!