message: chore: Use self reference instead of static name
diff: @@ -4,7 +4,7 @@ set -e
  CLUSTER=$1
  TASK_DEFINITION=${2:-waypoint-hub}
  if [ -z "$CLUSTER" ] || [ -z "$TASK_DEFINITION" ]; then
  - echo "usage: purge-service.sh CLUSTER [TASK_DEFINITION]"
  + echo "usage: $0 CLUSTER [TASK_DEFINITION]"
  exit 1
  fi
  