Support enabling CORS with the use of an Environment Variable

[alexgleith]

Hey folks, love your work!

It would be great if we can do a few more common configuration things without needing to build a custom Docker image.

One important example is CORS. I know we can install the CORS Middleware for FastAPI, but what if we could run the Docker image with ENABLE_CORS=true or CORS_DOMAINS="*" and it just worked. That would be nice, right!

Thoughts?

[drnextgis]

Have you seen this PR #341

[alexgleith]

Duplicate, whoops. I'll comment on the other one.