How to deploy mender API gateway?

I’ve deployed Mender Server open source using the helm charts provided by Mender. I’m trying to increase the artifact size limit, which I did by updating the MaxImageSize constant in the deployments repo (that was fine), and by increasing this value:

However, I don’t know how to deploy this change using helm. I noticed that the default api_gateway in helm charts pulls the traefik docker image: mender-helm/values.yaml at master · mendersoftware/mender-helm · GitHub

Am I supposed to change that to my custom docker container built from the mender-api-gateway-docker repo?

If so, I was getting errors when I deployed the mender-api-gateway-docker container, because it couldn’t find the cert.crt and private.key files. How do I pull those in?