Add Python 3.12

Author: hroncok

Dockerfile

@@ -20,6 +20,8 @@ RUN dnf update -y \
     python3.10-tkinter \
     python3.11-devel \
     python3.11-tkinter \
+    python3.12-devel \
+    python3.12-tkinter \
     python3-pip \
     /usr/bin/tox \
     /usr/bin/virtualenv \

README.md

@@ -10,7 +10,7 @@ run your Tox tests with all available Python versions in Docker container.
 # Installed packages
 
 On top of stable Fedora, this Docker image contains:
-- Python 2.7, 3.6, 3.7, 3.8, 3.9, 3.10, 3.11
+- Python 2.7, 3.6, 3.7, 3.8, 3.9, 3.10, 3.11, 3.12
 - Pypy2 and Pypy3.7, Pypy3.8 and Pypy3.9
 - python3-pip
 - gcc, gcc-c++, git-core and make