Merge pull request #2492 from dokku/jg-2481-proxy-command

Fix iteration on all apps for `dokku proxy` command

plugins/proxy/subcommands/default

@@ -6,13 +6,14 @@ source "$PLUGIN_AVAILABLE_PATH/proxy/functions"
 proxy_main_cmd() {
   declare desc="displays app proxy implementation via command line"
   local cmd="proxy"
-  local ALL_APPS=$(dokku_apps)
-  if [[ -n "$2" ]]; then
-    local APP="$2"
+  [[ "$1" == "$cmd" ]] && shift 1
+  local APPS=$(dokku_apps)
+  if [[ -n "$1" ]]; then
+    local APPS="$1"
   fi
-  local APPS=${APP:="$ALL_APPS"}
 
   dokku_col_log_info1_quiet "App Name" "Proxy Type"
+  local app
   for app in $APPS; do
     verify_app_name "$app"
     dokku_col_log_msg "$app" "$(get_app_proxy_type "$app")"