For getting a CAPTCHA on your server, I executed these steps for a non-docker server with default setup #MastoAdmin #Spam
1. Get a free account at https://www.hcaptcha.com and note down the site key & secret
2. Edit .env.production and add them to the following 2 new configuration keys:
HCAPTCHA_SECRET_KEY
HCAPTCHA_SITE_KEY
3. Stop mastodon-sidekiq & mastodon-web services, create a backup
4. git checkout master && git fetch && git checkout 45ba9ada3455e5fbce955371bf2aff369e47db54