Update Dockerfile

Try another Python container version.

Author: david-thrower

Dockerfile

@@ -1,7 +1,8 @@
 
 # FROM tensorflow/tensorflow:2.19.0
 # FROM python:3.14.0rc3-trixie
-FROM python:3.13.7-trixie
+# FROM python:3.13.7-trixie
+FROM python:3.12-trixie
 
 RUN apt update -y
 RUN apt upgrade -y