Update Dockerfile to use python base image

[stevendborrelli]

Description of your changes

Update Dockerfile to fix rendering issues on Mac.

• Moves from distroless to python base image. The go builder also uses bookworm
• refactor Dockerfile to remove copying from build container

Fixes #46

Please note this image has several vulnerabilities https://hub.docker.com/_/python/tags?name=3.13-bookworm, but is the newest stable build.

I have:

• Read and followed Crossplane's
  contribution process. Also see docs.
• Added or updated unit tests for my change.

[humoflife]

Thanks for updating the Dockerfile. unzip and install of aws-cli could be slightly streamlined.