write you own-values.yml

helm repo add wakapi https://ricristian.github.io/wakapi-helm-chart/
helm repo update
helm install -f own-values.yml wakapi-app wakapi/wakapi

write you own values.yaml and install with helm:
git clone https://github.com/ricristian/wakapi-helm-chart
cd wakapi-helm-chart
helm install -f own-values.yml wakapi-app ./charts/wakapi