subcommand restructure and bashstyle refactor. closes #1579

plugins/docker-options/subcommands/default

@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
+source "$PLUGIN_CORE_AVAILABLE_PATH/common/functions"
+source "$PLUGIN_CORE_AVAILABLE_PATH/docker-options/functions"
+
+docker_options_main_cmd() {
+  local desc="Display applications docker options"
+  local cmd="docker-options"
+
+  verify_app_name "$2" && local APP="$2"
+  read -ra passed_phases <<< "$(get_phases "$3")"
+  if [[ ! "${passed_phases[@]}" ]]; then
+    display_all_phases_options
+  else
+    display_passed_phases_options passed_phases[@]
+  fi
+}
+
+docker_options_main_cmd "$@"