title: Spring boot 1.4 logging on external tomcat
body: <p>I'm having a trouble deploying spring boot war file on external tomcat. The problem is that I use the default logging I (just set the logging.file=custom.log property). it works well inside STS with the embedded tomcat; however, when deploying on external tomcat, no log file is created. </p>
  
  <p>Update:
  i added a logback-spring.xml and it works fine on embedded tomcat but not on external (it doesn't create the file)</p>