diff --git a/codimd.subdomain.conf.sample b/codimd.subdomain.conf.sample
new file mode 100644
index 0000000..bd47c7e
--- /dev/null
+++ b/codimd.subdomain.conf.sample
@@ -0,0 +1,32 @@
+# make sure you have added the following environmental variables to your run command/compose file
+# CMD_DOMAIN=codimd.server.com
+# CMD_PROTOCOL_USESSL=true
+
+server {
+    listen 443 ssl;
+    listen [::]:443 ssl;
+
+    server_name codimd.*;
+
+    include /config/nginx/ssl.conf;
+
+    client_max_body_size 0;
+
+    # enable for ldap auth, fill in ldap details in ldap.conf
+    #include /config/nginx/ldap.conf;
+
+    location / {
+        # enable the next two lines for http auth
+        #auth_basic "Restricted";
+        #auth_basic_user_file /config/nginx/.htpasswd;
+
+        # enable the next two lines for ldap auth
+        #auth_request /auth;
+        #error_page 401 =200 /login;
+
+        include /config/nginx/proxy.conf;
+        resolver 127.0.0.11 valid=30s;
+        set $upstream_codimd codimd;
+        proxy_pass http://$upstream_codimd:3000;
+    }
+}
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