How to Auto Deploy ready deployment files through gitlab

I have a own business running and started to develop my corporate site using django. I have a private repo in my docker hub which i pull in my deployment through regcred secret.

i have this files which i need to make my deployment:

deployment.yaml,ingress.yaml,service.yaml,configmap.yaml

so from cli point of view with kubectl I have understood how to deploy and expose services to the internet through ingress.

what is important for my workflow is, that I want to have multiple versions (using gitlab tags) and deployments through .gitlab-ci.yaml.

i have succesfully connected my kubernetes cluster from digital ocean with my self-managed gitlab instance which has metrics installed on it so i can see the cpu usage etc. so i know its working properly.

how would i proceed now, does anyone have experience with it ? is it possible to just copy paste this files into my repo and process it through a runner ? i think its not possible, isn’t it ?

I would need some help or tips how to proceed.

thank you and a nice weekend to everybody.