Sorry for the delayed reply, I’ve been away for a while. In case you still have this issue (or for others who find this thread):
I haven’t seen this before, but some searching tells me that it’s to do with domain name length (someone else had the same problem - github issue here. In a regular nginx install you can update the http.conf file with the suggested line server_names_hash_bucket_size 64;
For Kobodocker, the nginx configs are generated using the files inside /path/to/kobo/nginx/. So, inside the nginx_site_https.conf.tmpl file, add the line server_names_hash_bucket_size 64; just below the charset utf8; line. Hopefully, when you restart the kobo docker, the nginx config will be updated and will load ok.
Let me know how it goes,
~ D.
