Update logging configuration

src/main/resources/logback.xml

@@ -6,6 +6,13 @@
     </encoder>
   </appender>
 
+  <appender name="FILE" class="ch.qos.logback.core.FileAppender">
+    <file>gitbucket.log</file>
+    <encoder>
+      <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
+    </encoder>
+  </appender>
+
   <root level="INFO">
     <appender-ref ref="STDOUT" />
   </root>
@@ -13,5 +20,8 @@
   <!--
   <logger name="service.WebHookService" level="DEBUG" />
   <logger name="servlet" level="DEBUG" />
+  <logger name="scala.slick" level="DEBUG" />
+  <logger name="scala.slick.session" level="DEBUG" />
   -->
+
 </configuration>