A couple of thing I noticed. . .
I am not sure if 0.0.0.0 is the real ip you are trying to reverse proxy or if that's your redaction. If former, that is incorrect. 0.0.0.0 in net=bridge will refer only to the letsencrypt container, not the host and not other containers. You can use the server ip to connect to a different container.
Also, you are trying to reverse proxy an https page. That is likely the reason you are getting the ssl handshake error (or a combination with a nonexistent service on 0.0.0.0 as referenced above). Try to use an http address for the reverse proxy.