make access.log file configurable via ENV variable

root/dashboard/goaccess.conf

@@ -332,7 +332,7 @@ with-mouse false
 # Specify the path to the input log file. If set, it will take
 # priority over -f from the command line.
 #
-log-file /config/log/nginx/access.log
+#log-file /config/log/nginx/access.log
 
 # Send all debug messages to the specified file.
 #

root/dashboard/www/index.php

@@ -252,6 +252,7 @@
             $geodb = '';
         endif;
 
+        $access_log = getenv("GOACCESS_LOG_FILE") ?: "/config/log/nginx/access.log";
         $goaccess = shell_exec("/usr/local/bin/goaccess -a -o html --config-file=/dashboard/goaccess.conf ".$geodb);
         $goaccess = str_replace("<title>Server&nbsp;Statistics", "<title>SWAG&nbsp;Dashboard", $goaccess);
         $goaccess = str_replace("<h1 class='h-dashboard'>", "<h1>", $goaccess);