subcommand restructure and bashstyle refactor. closes #1579

plugins/tar/subcommands/build

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
+source "$PLUGIN_CORE_AVAILABLE_PATH/common/functions"
+
+tar_build_cmd() {
+  local desc="calls tar:build-locked via command line"
+  local cmd="tar:build"
+
+  verify_app_name "$2"
+  local APP="$2"; local APP_BUILD_LOCK="$DOKKU_ROOT/$APP/.build.lock"
+  local APP_BUILD_LOCK_MSG="$APP is currently being deployed or locked. Waiting..."
+  [[ $(flock -n "$APP_BUILD_LOCK" true &>/dev/null ; echo $?) -ne 0 ]] && echo "$APP_BUILD_LOCK_MSG"
+
+  shift 1
+  flock -o "$APP_BUILD_LOCK" dokku tar:build-locked "$@"
+}
+
+tar_build_cmd "$@"