taskworker: better logs on signal

src/taskworker.js

@@ -87,7 +87,10 @@ async function main() {
 
     const debug = require('debug')('box:taskworker'); // require this here so that logging handler is already setup
 
-    process.on('SIGTERM', () => exitSync({ code: 0 })); // sent as timeout notification
+    process.on('SIGTERM', () => {
+        debug('Terminated');
+        exitSync({ code: 0 });
+    });
 
     // ensure we log task crashes with the task logs. neither console.log nor debug are sync for some reason
     process.on('uncaughtException', (error) => exitSync({ error, code: 1 }));