Added docker-compose config for nginx-basic-auth.

examples/nginx-basic-auth/default.conf

@@ -0,0 +1,17 @@
+upstream dockerui {
+    server dockerui:9000;
+}
+
+server {
+    listen       80;
+    server_name  localhost;
+
+    location / {
+        auth_basic "Docker UI";
+        auth_basic_user_file  /etc/nginx/users.htpasswd;
+
+        proxy_http_version 1.1;
+        proxy_set_header Connection "";
+        proxy_pass http://dockerui;
+    }
+}