fix nginx conf + improve ui

templates/header.html

@@ -0,0 +1,23 @@
+<div class="container-fluid">
+    <header
+        class="d-flex flex-wrap align-items-center justify-content-center justify-content-md-between py-3 mb-4 border-bottom">
+        <div class="col-md-3 mb-2 mb-md-0">
+            <a href="/" class="d-inline-flex link-body-emphasis text-decoration-none">
+                Mumui
+            </a>
+        </div>
+
+        <ul class="nav col-12 col-md-auto mb-2 justify-content-center mb-md-0">
+            <li><a href="{% url 'deployment' %}" class="nav-link px-2">Deployments</a></li>
+            <li><a href="#" class="nav-link px-2">About</a></li>
+        </ul>
+
+        <div class="col-md-3 text-end">
+            {% if user.is_authenticated %}
+                <a href="{% url 'logout' %}"><button type="button" class="btn btn-outline-danger me-2">Logout</button></a>
+            {% else %}
+                <a href="{% url 'login' %}"><button type="button" class="btn btn-outline-primary me-2">Login</button></a>
+            {% endif %}
+        </div>
+    </header>
+</div>