try to fix admin redirect loop with ssl

backend.conf.j2

@@ -1,6 +1,7 @@
 server {
+    listen 80;
 {% if domain %}
-    server_name {{ domain }};
+    server_name {{ domain }} www.{{ domain }};
 {% else %}
     server_name localhost;
 {% endif %}
@@ -42,20 +43,32 @@ server {
     resolver 8.8.8.8 8.8.4.4 208.67.222.222 208.67.220.220 valid=300s;
 {% endif %}
 
-    proxy_set_header Host $host;
-    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-    proxy_set_header X-Scheme $scheme;
 
     location / {
         proxy_pass http://frontend:8080;
+        proxy_set_header Host $host;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_redirect off;
     }
 
     location /admin/ {
         proxy_pass http://backend:8000;
+        proxy_set_header Host $host;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_redirect off;
     }
 
     location /api/ {
         proxy_pass http://backend:8000;
+        proxy_set_header Host $host;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_redirect off;
     }
 
     location /static/ {