Don't append :443 to registry domain in the kubernetes-worker layer registry action. Fixes #45547

cluster/juju/layers/kubernetes-worker/actions/registry

@@ -46,7 +46,7 @@ for param in ('tlscert', 'tlskey', 'domain', 'htpasswd', 'htpasswd-plain'):
     context[param] = value
 
 # Create the dockercfg template variable
-dockercfg = '{"%s:443": {"auth": "%s", "email": "root@localhost"}}' % \
+dockercfg = '{"%s": {"auth": "%s", "email": "root@localhost"}}' % \
             (context['domain'], context['htpasswd-plain'])
 context['dockercfg'] = b64encode(dockercfg.encode()).decode('ASCII')