Serverless Invoke inside the docker

[piercus]

Hello @alexleonescalera,

On my point of view, there is one missing killer-feature

Currently i would like to have a local test which is running 'with' packaged's version of packaged library.

It will give the ability to test :

• Packaging
• Some optimization
• CI workflow tests

To do this, I need to have the ability to invoke the function inside a 'built docker' before deploying.

Design proposal

I would like to design it like :

serverless invoke docker --function --function functionName --stage dev --region us-east-1 --log

This would call serverless invoke local --function --function functionName --stage dev --region us-east-1 --log inside a specific amazonlinux docker container with all the zip librairies in the right place.

What do you think ?
Are you interested to include this into serverless-ephemeral ?
Are you open to PR regarding this ?
Do you see any future limitations ?

[piercus]

I think https://aws.amazon.com/blogs/aws/new-aws-sam-local-beta-build-and-test-serverless-applications-locally/ can be interesting for the purpose of testing locally inside docker

[alexleonescalera]

Interesting, thanks for sharing. I just found out there is a Serverless plugin for SAM: https://github.com/SAPessi/serverless-sam
I'll try (as time and my project allows) taking a look at their code and dig more into SAM, and see how we can achieve local testing for Serverless Ephemeral libraries without reinventing the wheel.