Read hostname from /etc/hostname

assets/login.erb

@@ -3,7 +3,7 @@
 <head>
   <meta charset="UTF-8">
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
-  <title>Home Server Status</title>
+  <title><%= hostname %> status</title>
   <style>
     body {
       background: #0f1117;
@@ -115,7 +115,7 @@
 <body>
 
 <header>
-  <h1><span>homelab</span> &middot; status</h1>
+  <h1><span><%= hostname %></span> &middot; status</h1>
 </header>
 
 <div class="card">