create a GitHub action workflow to build the layer.zip file as a release

[JohannesKonings]

The abap runtime layer zip file could be provided as a asset in GitHub releases. Every abap runtime relevant changes could start a GitHub action workflow that create the layer.zip in a new release.

[larshp]

or is it something that is typically released to npm?

[JohannesKonings]

As far as I know the custom runtime can't create files during the execution of the lambda function. Thats why 'npm install' is not possible.

There are two ways to assign the layer to the lambda function:

• As a zip file, which could be downloaded from the releases
• linked to a central AWS account with the layer

This repository provides the Node.js layer from a central AWS account
https://github.com/lambci/node-custom-lambda
If I have not missed anything there is no npm used.