Update dockerfiles and set api server url in kuberneters and docker integration tests

[iocanel]

This pull request aims at addressing the following issues:

1. Update the Dockerfiles in kubernetes and docker integration tests.
2. Remove an inconsistency among invoker.properties that is causing issues when running the tests locally.

[quarkus-bot]

✔️ The latest workflow run for the pull request has completed successfully.

It should be safe to merge provided you have a look at the other checks in the summary.

You can consult the Develocity build scans.

[gsmet]

Thanks!