Update Container Version(s)

[www-signal-fyi]

Updating:
python:3.7-buster

[codara-ai-code-review]

Code suggestions, improvements, etc.

1. /Dockerfile
   • Consider pinning the versions of the system dependencies, such as the python base image, to ensure reproducibility and stability.

Potential issues, bugs, or flaws:

1. /Dockerfile
   • When pinning the Python base image to a specific SHA, ensure that this is done intentionally and aligns with your security and stability requirements. Just be aware that this will prevent the base image from being updated, so it should be a conscious decision.