Advanced Docker Logging - Capturing Drupal's watchdog messages in Graylog

Premise: Capturing Drupal’s watchdog messages in a container Logging in Docker is complicated enough as it is, but it gets even more complicated when Drupal logging is involved. For most Drupal sites, logging with the Dblog module is not sufficient due to scale, and instead is being handled with the Syslog module. The result isn’t pretty, but works flawlessly and integrates with rsyslog, which is available for both Debian and CentOS-based operating systems. Problem: Where did the application logs go? […]