Added self-updating, better docker-compose control

* Added --self-update to check for and download new versions of
  the phar
* Added --only option which accepts a comma-separated list of
  services to pass to docker-compose pull/up
* Added --updated option to only pass the updated services to
  docker-compose pull/up

bin/freshdocker

@@ -5,6 +5,16 @@ require_once __DIR__."/../vendor/autoload.php";
 
 if (file_exists(__DIR__."/../src/version.php")) {
     require_once __DIR__."/../src/version.php";
+    if (PHAR::running()) {
+        require_once __DIR__."/../src/swup.php";
+        SWUP::register([
+            'url' => "https://files.noccylabs.info/.repo",
+            'channel' => 'beta',
+            'package' => 'fresh',
+            'version' => APP_VERSION,
+            'phar' => 'fresh.phar'
+        ]);
+    }
 } else {
     define("APP_VERSION", "DEV");
     define("BUILD_DATE", "src");