Fixed issue with python version in Dockerfile

Author: sveinugu

Dockerfile

@@ -1,4 +1,7 @@
-FROM prefecthq/prefect:2.20.7-python3.12-kubernetes
+ARG PREFECT_VERSION=2.20.7
+ARG PYTHON_VERSION=3.12
+
+FROM prefecthq/prefect:$PREFECT_VERSION-python$PYTHON_VERSION-kubernetes
 
 RUN pip install omnipy_examples
 # RUN pip uninstall omnipy_examples -y
@@ -13,4 +16,4 @@ RUN set -eux; \
     echo "de_DE.UTF-8 UTF-8" >> /etc/locale.gen; \
     locale-gen; \
     update-locale en_us.UTF-8;
-RUN ln -sf /usr/local/lib/python3.10/site-packages /opt/prefect/src
+RUN ln -sf /usr/local/lib/python$PYTHON_VERSION/site-packages /opt/prefect/src