Please document lambda base images properly

I was reading [AWS documentation](https://docs.aws.amazon.com/lambda/latest/dg/python-image.html) about base images; it was so strong and serious, it was what I was expecting. But after that I've found the table "AWS base images for Python". There are several links named `Dockerfile for Python 3.* on GitHub`. Of course I was imagining seeing a good, detailed Dockerfiles with a list of installed software and customization commands.

I pressed them and laughed really hard like El Risitas with frying pans. I saw how you are unpacking several archives. It is very interesting that AWS developers know how to unpack archives. But I don't want to see this code in documentation.

It looks like the AWS manager created the task about "documenting base images for Lambda", but the developers just _didn't want to do it_ and they just added links to the pointless Dockerfiles.

Please document base images for Lambda properly. Thank you.