[Snyk] Security upgrade python from 3.9.15 to latest

[madisonmay]

Snyk has created this PR to fix 2 vulnerabilities in the dockerfile dependencies of this project.

Keeping your Docker base image up-to-date means you’ll benefit from security fixes in the latest version of your chosen image.

Snyk changed the following file(s):

• readme_docs/Dockerfile

We recommend upgrading to python:latest, as this image has only 189 known vulnerabilities. To do this, merge this pull request, then verify your application still works as expected.

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Out-of-bounds Write SNYK-DEBIAN11-GLIBC-5927133	829
	Out-of-bounds Write SNYK-DEBIAN11-GLIBC-5927133	829
	Out-of-bounds Write SNYK-DEBIAN11-GLIBC-5927133	829
	Out-of-bounds Write SNYK-DEBIAN11-GLIBC-5927133	829
	Out-of-bounds Write SNYK-DEBIAN11-LIBWEBP-5893094	829

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Important

• Check the changes in this PR to ensure they won't cause issues with your project.
• Max score is 1000. Note that the real score may have changed since the PR was raised.
• This PR was automatically created by Snyk using the credentials of a real user.

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Learn how to fix vulnerabilities with free interactive lessons:

🦉 Out-of-bounds Write

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Note

Upgrade readme_docs/Dockerfile base image from python:3.9.15 to python:latest.

^{Written by Cursor Bugbot for commit 30c1b0f. This will update automatically on new commits. Configure here.}

[cursor]

Bug: Using floating latest tag breaks build reproducibility

Changing from python:3.9.15 to python:latest creates non-reproducible builds since the latest tag is mutable and can change at any time. This conflicts with the uv sync --locked command on line 8, which is designed for reproducible installs. When latest points to a new Python version (e.g., beyond 3.13), the build may fail since dependencies like msgpack-numpy==0.4.4.3 may not support it yet. Consider using a specific version tag like python:3.12 or python:3.13 instead.