debugging output if acceptance tests fail on CI

services/web/Gruntfile.coffee

@@ -39,6 +39,7 @@ module.exports = (grunt) ->
 			app:
 				options:
 					index: "app.js"
+					logFile: "app.log"
 
 		watch:
 			coffee:

services/web/Jenkinsfile

@@ -124,7 +124,7 @@ pipeline {
     stage('Acceptance Tests') {
       steps {
         sh 'docker pull sharelatex/acceptance-test-runner'
-        sh 'docker run --rm -v $(pwd):/app --env SHARELATEX_ALLOW_PUBLIC_ACCESS=true sharelatex/acceptance-test-runner'
+        sh 'docker run --rm -v $(pwd):/app --env SHARELATEX_ALLOW_PUBLIC_ACCESS=true sharelatex/acceptance-test-runner || (cat forever/app.log && false)'
       }
     }