Fix the Keycloak memory issue on Podman setting JAVA_OPTS_APPEND

[jcarranzan]

Summary

This PR addresses the issue quarkus-qe/quarkus-test-suite#2106
where Podman environments were unable to correctly enforce memory limits for Keycloak containers. The solution applies a conditional setting for environments using Podman by adding container.withEnv("JAVA_OPTS_APPEND", "-XX:MaxRAM=1g");, ensuring that the Java heap memory allocation respects the 1GB limit in these environments.

It won' be necessary this https://github.com/quarkus-qe/quarkus-test-suite/pull/2125/files in test suite.

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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Dependency update
• Refactoring
• Release (follows conventions described in the RELEASE.md)
• Breaking change (fix or feature that would cause existing functionality to change)
• This change requires a documentation update
• This change requires execution against OCP (use run tests phrase in comment)

Checklist:

• Example scenarios has been updated / added
• Methods and classes used in PR scenarios are meaningful
• Commits are well encapsulated and follow the best practices

[mabartos]

@jcarranzan Thanks for the PR!

If it's verified the container limit set via the testcontainer's withMemory() does not work with Podman, but does with Docker, we can go this direction.

As a temporary solution, it works for me as well, but it'd be good to verify whether setting the limit really works with Docker and is not opinionated by available memory on the agent (Docker 16GB vs Podman 8GB).

[rsvoboda]

I was expecting JAVA_OPTS_APPEND approach to be applied always, no matter if it's podman or docker. Can you elaborate why did you pick if-else approach?

[mabartos]

@jcarranzan LGTM. I hope the JAVA_OPTS_APPEND is not set somewhere else. Please, let me know if it works as expected.

[jcarranzan]

JAVA_OPTS_APPEND

Yes @mabartos , it worked when I tested it on the Jenkins Podman job.
As I mentioned above in the description, once this MR is merged, we should just remove this property :
https://github.com/quarkus-qe/quarkus-test-suite/blob/27e6dbcb22319e740a3c065ee7d748053ea61f23/http/http-advanced/src/test/java/io/quarkus/ts/http/advanced/HttpAdvancedIT.java#L20

[rsvoboda]

@jcarranzan if this is intended for backport, please set appropriate label