uninstall package before installation

pipelines/build.sh

@@ -23,6 +23,9 @@ which pip
 echo " > python --version"
 python --version
 
+echo "===================== uninstall package ====================="
+pip uninstall -y "$JOB_NAME"
+
 echo "===================== install requirements ====================="
 if [ -f "requirements.txt" ]; then
   pip install -r requirements.txt