Hi @nroth,
Based on that request log, the cache node isn’t receiving any requests. The most likely explanation is that the URL is incorrect, or you have no cacheable tasks (which is unlikely).
I’d be able to determine a lot more from a build scan. You could create one by running with --scan (assuming Gradle 4.3 or later). If you’d prefer not to share the link publicly, you could send the link to me here via private message.
Regarding the timezone in the logs, the cache node container uses UTC as the timezone independent of the host.