Add init proxy conf

proxy/nginx/init/default.conf

@@ -0,0 +1,13 @@
+server {
+    listen 80;
+
+    location /.well-known/acme-challenge/ {
+        root /var/www/certbot;
+    }
+
+    location / {
+	charset utf-8;
+	default_type text/plain;
+	return 200 "Hello world!";
+    }
+}