don't use set to guard against pipefail

plugins/nginx-vhosts/bind-external-ip

@@ -2,7 +2,7 @@
 set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
 
 APP="$1"
-set +e; NO_VHOST=$(dokku config:get $APP NO_VHOST); set -e
+NO_VHOST=$(dokku config:get $APP NO_VHOST || true)
 
 RE_IPV4="([0-9]{1,3}[\.]){3}[0-9]{1,3}"
 

plugins/nginx-vhosts/post-deploy

@@ -3,8 +3,7 @@ set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
 source "$(dirname $0)/../common/functions"
 
 APP="$1"; PORT="$2"; IP="$3"
-
-set +e; NO_VHOST=$(dokku config:get $APP NO_VHOST); set -e
+NO_VHOST=$(dokku config:get $APP NO_VHOST || true)
 
 if [[ -n "$NO_VHOST" ]]; then
   dokku_log_info1 "NO_VHOST config detected"