Fix bug when VHOST without newline

plugins/domains/functions

@@ -148,7 +148,7 @@ domains_add_global() {
     if [[ $(egrep -w "^$DOMAIN$" "$GLOBAL_VHOST_PATH" > /dev/null 2>&1; echo $?) -eq 0 ]]; then
       dokku_log_info1 "Skipping: $DOMAIN already added"
     else
-      echo "$DOMAIN" >> "$GLOBAL_VHOST_PATH"
+      sed -i -e "\$a\\$DOMAIN" "$GLOBAL_VHOST_PATH"
       dokku_log_info1 "Added $DOMAIN"
     fi
   done

tests/unit/20_domains.bats

@@ -170,7 +170,7 @@ teardown() {
   echo "status: "$status
   assert_success
 
-  run bash -c "dokku domains | grep -q global.dokku.me"
+  run bash -c "dokku domains | egrep -qw '^global.dokku.me\$'"
   echo "output: "$output
   echo "status: "$status
   assert_success