add version hints

.gitignore

@@ -7,3 +7,4 @@
 */other/backups/*
 !*/other/backups/.htaccess
 mysql_data
+clean.sh

docker-compose.yml

@@ -6,6 +6,7 @@ web:
     - "8080:80"
   volumes:
     - ./registration-system:/var/www/html
+    - ./.git:/var/www/html/.git
 
 pma:
   image: phpmyadmin/phpmyadmin

registration-system/frameworks/Environment.php

@@ -72,7 +72,8 @@ class Environment {
             'impressum' => $config_impressum,
             'databaseDebug' => $config_databse_debug,
             'adminUsersFile' => $config_userfile,
-            'currentFahrtFile' => $config_current_fahrt_file
+            'currentFahrtFile' => $config_current_fahrt_file,
+            'gitSummary' => $this->getGitSummary()
         ];
 
         $this->bachelor = null;
@@ -173,6 +174,13 @@ class Environment {
         header("location: ..");
     }
 
+    private function getGitSummary() {
+        if (isset($this->sysconf['gitSummary']) and !empty($this->sysconf['gitSummary']))
+            return $this->sysconf['gitSummary'];
+
+        exec('git show --quiet HEAD', $output);
+        return $output;
+    }
 
     // ===========================================================================================================
     // Some context based trip getters

registration-system/view/default_index.php

@@ -63,6 +63,13 @@ abstract class DefaultIndex {
                  PS: Solltest du es doch geschafft haben, gib' uns bitte Bescheid, damit wir dich wieder löschen.
             -->
 
+            <!--
+                Current Version (git), check out the details on https://github.com/TimRepke/registration-system
+
+                   > <?php echo implode("\n                   > ", $this->environment->sysconf['gitSummary']); ?>
+
+            -->
+
             <title>Fachschaftsfahrt</title>
             <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
             <?php $this->echoHeaders(); ?>