Correct code that installs Python modules with pip3

tools/itango/start-DS.sh

@@ -36,9 +36,11 @@ if [ -f ${runThis} ]; then
 else
     myDir=${PWD}/$(dirname ${deviceServer})
 fi
-deviceServerPath=${myDir//${HOME}\//\/hosthome\/}
-if [ -f ${deviceServerPath}/requirements.txt ]; then
+deviceServerPath=${myDir/${HOME}/\/hosthome}
+if [ -f ${myDir}/requirements.txt ]; then
+    echo "Installing required Python modules with pip3..."
     docker exec -it itango pip3 install -r ${deviceServerPath}/requirements.txt
+    echo "Installing required Python modules with pip3 done."
 fi
 
 docker exec -it itango python3 ${deviceServerPath}/${runThis} ${instance} ${@}