suppressing useless packages and adding OS version info

python_3.9.def

@@ -4,7 +4,7 @@ From: centos:8
 %help 
 # in progress
 This is a singularity container packing a python 3.9.6 (only version) environment with all the packages necessary to execute all the python scripts present in the version 2.10.0 of the gad pipeline.
-Python 3.9.6 is the latest available version in CentOS 8 used for this build.
+Python v3.9.6 is the latest available version in CentOS v8.5.211 used for this build.
 Authors : valentin.vautrot@u-bourgogne.fr
 python3.9.6 is installed in /usr/bin/python3.9/
 non-default python3.9.6 libs are installed in /usr/lib/python3.9/site-packages/
@@ -42,7 +42,6 @@ mv /data/VcfTools.py /usr/lib/python3.9/site-packages/
 mv /data/CnvTools.py /usr/lib/python3.9/site-packages/
 
 # install python pip packages
-pip3.9 install --upgrade -t /usr/lib/python3.9/site-packages/ wheel
 pip3.9 install --upgrade -t /usr/lib/python3.9/site-packages/ labkey
 pip3.9 install --upgrade -t /usr/lib/python3.9/site-packages/ numpy
 pip3.9 install --upgrade -t /usr/lib/python3.9/site-packages/ matplotlib
@@ -67,4 +66,5 @@ python3 -m pip list
 %labels 
 container v0.1
 Creation date : 2023-09-13
-python version 3.9.6
\ No newline at end of file
+Contained OS version : CentOS 8.5.211
+Contained python version : 3.9.6
\ No newline at end of file