Use Letsencrypt (or eventually any) certificates in different PODs, which are not ready for cert-manager

[ratermir]

Is there a way, how to access certificates from cert-manager in anothe PODs, that aren't by nature able to work with them?
I know to do it in bare metal with lets'encrypt (by access files in etc/letsencryp directory structure), but is something like this possible also with cert-manager? Something like secret with certificates, configmap, volume, in the worst case a service ... or anything?

I'd like to use certificates managed by cert-manager and generated for web server in FTPS server POD in the same namespace and for the same domain, but I didn't find any FTP server which would able to work with cert-manager.