Exception NoClassDefFoundError org/testcontainers/utility/PathUtils

Hello

There is an exception in MountableFile, it does not find the class PathUtils when it calls recursiveDeleteDir from shutdownHook.
I think this is because during the shutdown hook the class loader is already closed by Maven and cannot be used to load new classes.

See attached stack trace

Exception in thread "Thread-17" java.lang.NoClassDefFoundError: org/testcontainers/utility/PathUtils$1
	at org.testcontainers.utility.PathUtils.recursiveDeleteDir(PathUtils.java:26)
	at org.testcontainers.utility.MountableFile.lambda$deleteOnExit$0(MountableFile.java:284)
	at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.lang.ClassNotFoundException: org.testcontainers.utility.PathUtils$1
	at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:50)
	at org.codehaus.plexus.classworlds.realm.ClassRealm.unsynchronizedLoadClass(ClassRealm.java:271)
	at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:247)
	at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:239)
	... 3 more

Start with MountableFile.deleteOnExit and PathUtils.recursiveDeleteDir, the entry points shown in the stack trace. Reproduce the shutdown-hook failure under Maven and inspect whether class loading occurs after the loader closes. Done means cleanup completes without the NoClassDefFoundError and the relevant behavior is covered by an appropriate test.