Fix container build for Python 3.12 (#54)

Author: manstis

lightspeed-stack/Containerfile.lsc

@@ -8,7 +8,7 @@ FROM registry.access.redhat.com/ubi9/ubi-minimal AS builder
 
 ARG APP_ROOT=/app-root
 RUN microdnf install -y --nodocs --setopt=keepcache=0 --setopt=tsflags=nodocs \
-    python3.11 python3.11-devel python3.11-pip
+    python3.12 python3.12-devel python3.12-pip
 WORKDIR /app-root
 
 # UV_PYTHON_DOWNLOADS=0 : Disable Python interpreter downloads and use the system interpreter.
@@ -17,7 +17,7 @@ ENV UV_COMPILE_BYTECODE=0 \
     UV_PYTHON_DOWNLOADS=0
 
 # Install uv package manager
-RUN pip3.11 install uv
+RUN pip3.12 install uv
 
 # Add explicit files and directories
 # (avoid accidental inclusion of local directories or env files or credentials)