Ionic web application shows IP address instead of domain name

I registered a domain name on namecheap and masked the ip address of my server to that domain name. I ported webogram to ionic since it’s an angular application found here: https://github.com/zhukov/webogram and after installing ionic and running ionic serve, I type in the domain name and it takes me to my website BUT it changes the domain name to the ip address of the server. For example, www.example.com/login becomes something like xxx.xx.xx.xxx/#/login Let me know if you guys have an idea what it could be and how to fix it, I should also mention I’m running all of this inside a docker container with port 80 exposed.