Caddyfile which works as a reverse proxy for PostHog EU

Caddyfile

my.domain.com {
  header {
    # Below is sufficient if you want the proxy to work 
    # only for requests coming from your "production" domain.
    # If you'd like to test your proxy from other domains, such
    # as 'localhost', you'll need to tweak this line accordingly
    Access-Control-Allow-Origin https://my.domain.com
  }

  reverse_proxy https://eu.posthog.com:443 {
    header_up Host eu.posthog.com
    header_down -Access-Control-Allow-Origin
  }
}