Intermittent DatabaseDriverTmpfsTest::tmpfs test failures in CI

[rnorth]

See Azure CI reports for a summary: https://dev.azure.com/testcontainers/testcontainers-java/_test/analytics?definitionId=5&contextType=build - this test has a ~94% pass rate.

We should investigate why this is a flaky test and resolve.

Error message:

java.lang.AssertionError: tmpfs inside container works fine: 'ls: cannot access '/testtmpfs/test.file': No such file or directory
' does not equal expected 'ls: 
cannot access '/testtmpfs/test.file': No such file or directory
'

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. If you believe this is a mistake, please reply to this comment to keep it open. If there isn't one already, a PR to fix or at least reproduce the problem in a test case will always help us get back on track to tackle this.