Add snippets and config

snippets/letsencrypt.conf

@@ -0,0 +1,11 @@
+# -*-nginx-*-
+location /.well-known/ {
+    default_type "text/plain";
+    root /var/www/html;
+}
+location = /.well-known/acme-challenge/ {
+    return 404;
+}
+location / {
+    return 301 https://$host$request_uri;
+}