Docker high image disk utilization: Why is my Docker image/disk getting full
Docker FAQ
Issues with either Unraid or Docker...
This will clean up existing logs and lower image size dramatically:
truncate -s 0 /var/lib/docker/containers/*/*-json.log
The overall solution for logs is to limit the size. Under advanced settings, add this line to extra parameters:
--log-opt max-size=50m --log-opt max-file=1