Updated Java Minimum version to 17

[madduci]

Resolves issue #669

As for SpringBoot 3.2.x, the minimum Java Version must be 17.

Docker base images have been updated to newer versions.

[jkiddo]

Overall - looks fine and safe since HAPI FHIR uses Spring Boot v3.2 declared here: https://github.com/hapifhir/hapi-fhir/blob/0fe3380c4a613fcb5c4af99a228bfcc7971f162a/pom.xml#L1013

It does also requires a bump on tomcat here:

hapi-fhir-jpaserver-starter/Dockerfile

Line 21 in 8f497dd

FROM bitnami/tomcat:9.0 AS tomcat

due to https://spring.io/blog/2022/11/16/spring-framework-6-0-goes-ga

[jkiddo]

@jamesagnew I imagine you would have an opinion on the timing of this?

[madduci]

I have a question about it. Should we swap the Tomcat image against e.g. Eclipse-Temurin base image? It comes also with a shell for debugging purposes and can run the SpringBoot package like the distroless one (also the Alpine one)

From one side it's more resilient compared to the one of Tomcat, maybe also smaller. On the other side, Tomcat should be tested separately, but for Production use in environments such as Kubernetes, I see that smaller attack surfaces are better.

[jkiddo]

Main reason for having tomcat was to be sure that the application was compatible with tomcat. I dont know who uses the dockerized version of the application inside tomcat inside Docker.