fix arg parsing

scripts/deployment.sh

@@ -12,8 +12,8 @@ GIT_REPO=$HOME/data-logistics-service
 if [ -z ${1+x} ]; then ENTRYPOINT=`pwd`; else ENTRYPOINT=$1; fi
 if [ -z ${2+x} ]; then echo "No user input for starting repository location. Default value: $GIT_REPO"; else GIT_REPO=$2; fi
 if [ -z ${3+x} ]; then export SERVER_DOMAIN=dls.fz-juelich.de; else export SERVER_DOMAIN=$3; fi
-if [ -z ${3+x} ]; then unset AIRFLOW__SECRETS__BACKEND; else export AIRFLOW__SECRETS__BACKEND=$4; fi
-if [ -z ${3+x} ]; then unset AIRFLOW__SECRETS__BACKEND_KWARGS; else export AIRFLOW__SECRETS__BACKEND_KWARGS=$5; fi
+if [ -z ${4+x} ]; then unset AIRFLOW__SECRETS__BACKEND; else export AIRFLOW__SECRETS__BACKEND=$4; fi
+if [ -z ${5+x} ]; then unset AIRFLOW__SECRETS__BACKEND_KWARGS; else export AIRFLOW__SECRETS__BACKEND_KWARGS=$5; fi
 
 echo "DEBUG values: OLD_DIR=$OLD_DIR, ENTRYPOINT_DIR=$ENTRYPOINT and GIT_REPO=$GIT_REPO"
 echo "DEBUG using secrets backend: $AIRFLOW__SECRETS__BACKEND"