Docker registry getsockopt: connection refused

I am attempting to set up my own docker registry on an EC2 instance, Ubuntu Server 16.04. Having followed, I currently have nginx running with LetsEncrypt and have successfully started the docker registry service with the docker run command. However, the system responds that the connection is refused when doing docker push.

Below I have substituted my FQDN with but the DNS is resolving correctly.

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  • $ docker run -d -p 5000:5000 --restart=always --name docker-registry -v /etc/letsencrypt/live/ -e REGISTRY_HTTP_TLS_CERTIFICATE=/certs/fullchain.pem -e REGISTRY_HTTP_TLS_KEY=/certs/privkey.pem registry:2
    $ docker pull ubuntu
    $ docker tag ubuntu
    $ docker push
    The push refers to a repository []
    Get dial tcp 54.x.x.x:5000: getsockopt: connection refused

    The service appears to be listening.

    $ sudo netstat -tlnp | grep :5000
    tcp6    0     0 :::5000           :::*            LISTEN      9655/docker-proxy

    And I can even connect on localhost.

    $ nc -nv 5000
    Connection to 5000 port [tcp/*] succeeded!

    But attempting to connect remotely fails.

    $ nc -nv 54.x.x.x 5000
    nc: connect to 54.x.x.x port 5000 (tcp) failed: Connection refused

    The firewall also allows 5000/tcp.

    $ sudo ufw status | grep 5000
    5000/tcp                   ALLOW       Anywhere
    5000/tcp (v6)              ALLOW       Anywhere (v6)

    The AWS ACL allows 5000/tcp to everyone ( What am I missing?

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