feat: run containerdebug in the background (#144)

* chore: bump rust version in stackable base image

* cargo update

* remove unused env var

* cargo update

* reintroduce the CONTAINERDEBUG_LOG_DIRECTORY env var

* Bring Cargo.nix up to date

* Add JVM memory limit to work around #147

* Split out containerdebug probe into a separate test step

This should help reduce the amount of spam while checking other assertions

* Don't print the full containerdebug output

---------

Co-authored-by: Natalie Klestrup Röijezon <nat@nullable.se>

Author: razvan

CHANGELOG.md

@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 
+### Added
+
+- Run a `containerdebug` process in the background of each Hello container to collect debugging information ([#144]).
+
+[#144]: https://github.com/stackabletech/hello-world-operator/pull/144
+
 ## [24.11.0] - 2024-11-18
 
 ### Added