CNB_SERVICES is not well documented

[mattysweeps]

There's an RFC which mentions the environment variable CNB_SERVICES and how the contents of the variable are not well defined.

https://github.com/buildpacks/rfcs/blob/2c6ac8da87d3f6daddbbb859f258925047f15179/text/0012-service-binding.md#L17

But also, I haven't seen any references to this environment variable in the spec either.

I see that the PR to spec was approved and then closed, with no reference to any replacement PR.
#57

So I'm unsure of the state of this variable

[mattysweeps]

I have been pointed to https://github.com/buildpacks/spec/blob/master/extensions/bindings.md
Which references CNB_BINDINGS instead of CNB_SERVICES

https://github.com/buildpacks/lifecycle/issues/254

[nebhale]

Yep, $CNB_SERVICES is all completely removed and the replacement spec is now in place.