Add example about ingress with cert-manager annotation

[claudio4j]

Remove unecessary dockerfiles

[claudio4j]

@johnpoth for review. I can add the same example to the CSB project this one is ok.

[johnpoth]

Hi @claudio4j thanks this looks great!

I wonder if this should be integrated into the example and not be in a separate section ? Also, since this is for OCP shouldn't we use Routes instead of Ingress ? Thanks for removing those docker files; should we remove them for the other examples too ? Cheers!

[claudio4j]

if this should be integrated into the example and not be in a separate section ?

Do you mean to use the ingress as the API endpoint for the server and not the route ?

shouldn't we use Routes instead of Ingress

I wanted to highlight the Ingress usage because cert-manager annotations only works in ingress resources, not routes.

should we remove them for the other examples too

sure, I will do it when working in the csb example.

[johnpoth]

Ah yeah your right it seems it's in only supported in Technology Preview https://docs.openshift.com/container-platform/4.17/networking/routes/secured-routes.html#nw-ingress-route-secret-load-external-cert_secured-routes maybe sometime in the future then ...