Update readme

Author: benjaminbear

README.md

@@ -1,6 +1,6 @@
 # Dynamic DNS Server for Docker with Web UI written in Go
 
-![Travis build status](https://travis-ci.com/benjaminbear/docker-ddns-server.svg?branch=master)
+![Build status](https://img.shields.io/github/actions/workflow/status/benjaminbear/docker-ddns-server/build.yml)
 
 ![GitHub release (latest by date)](https://img.shields.io/github/v/release/benjaminbear/docker-ddns-server)
 ![Go version](https://img.shields.io/github/go-mod/go-version/benjaminbear/docker-ddns-server?filename=dyndns%2Fgo.mod)
@@ -20,6 +20,8 @@ You can either take the docker image or build it on your own.
 
 ### Using the docker image
 
+https://registry.hub.docker.com/r/bbaerthlein/docker-ddns-server
+
 Just customize this to your needs and run:
 
 ```