subcommand restructure and bashstyle refactor. closes #1579

plugins/tar/subcommands/from

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
+source "$PLUGIN_CORE_AVAILABLE_PATH/common/functions"
+
+tar_from_cmd() {
+  local desc="deploys app from tarball at URL via command line"
+  local cmd="tar:from"
+  verify_app_name "$2"
+  local APP=$2
+  local URL=$3
+  shift 3
+  curl -# --insecure -L "$URL" | dokku tar:in "$APP" "$@"
+}
+
+tar_from_cmd "$@"