Updated to alpine 3.18.5 (PR to #13989)

[snipe]

Bumped alpine to 3.18.5 per #13989 (Snyk defaults to master for targeting.)

[what-the-diff]

PR Summary

• Update of Base Docker Image
  The Dockerfile particular to the Alpine Linux OS was modified. The base image was updated from version Alpine 3.17.3 to Alpine 3.18.5. Updating the base image with this newer version will essentially equip our containerized application with the latest updates, improvements, and security patches inherent in the new version. This makes our application safer and more efficient. No other aspects of the Dockerfile were changed.