diff --git a/Dockerfile b/Dockerfile
index 2f1a6b2e..62efec59 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,8 @@
 FROM sismics/jetty:9.2.20-jdk7
 MAINTAINER benjamin.gam@gmail.com
 
-RUN apt-get -y -q install tesseract-ocr tesseract-ocr-fra tesseract-ocr-jpn
+RUN apt-get update && apt-get -y -q install tesseract-ocr tesseract-ocr-fra tesseract-ocr-jpn && \
+    apt-get clean && rm -rf /var/lib/apt/lists/*
 
 ENV TESSDATA_PREFIX /usr/share/tesseract-ocr
 ENV LC_NUMERIC C
diff --git a/docs-android/app/build.gradle b/docs-android/app/build.gradle
index 3dd34cb3..6c2f2d82 100644
--- a/docs-android/app/build.gradle
+++ b/docs-android/app/build.gradle
@@ -3,7 +3,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.1.2'
+        classpath 'com.android.tools.build:gradle:2.2.3'
     }
 }
 apply plugin: 'com.android.application'
diff --git a/docs-android/gradle/wrapper/gradle-wrapper.properties b/docs-android/gradle/wrapper/gradle-wrapper.properties
index 697e9cd9..5d465776 100644
--- a/docs-android/gradle/wrapper/gradle-wrapper.properties
+++ b/docs-android/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Sat Jan 16 19:15:13 CET 2016
+#Fri Dec 23 21:14:18 CET 2016
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.10-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-all.zip
diff --git a/docs-web/src/main/webapp/src/partial/docs/document.view.content.html b/docs-web/src/main/webapp/src/partial/docs/document.view.content.html
index c3b0ca74..a19f2dd4 100644
--- a/docs-web/src/main/webapp/src/partial/docs/document.view.content.html
+++ b/docs-web/src/main/webapp/src/partial/docs/document.view.content.html
@@ -46,7 +46,7 @@
         <a ng-click="openFile(file)">
           <img class="thumbnail-file" ng-src="../api/file/{{ file.id }}/data?size=thumb" tooltip="{{ file.mimetype }} | {{ file.size | filesize }}" tooltip-placement="top" />
         </a>
-        <div class="caption btn btn-link file-name" ng-click="openFile(file)">{{ file.name }}</div>
+        <div class="caption btn btn-link file-name" ng-click="openFile(file)" ng-if="file.name">{{ file.name }}</div>
         <div class="caption" ng-show="document.writable">
           <div class="pull-left">
             <div class="btn btn-default handle"><span class="glyphicon glyphicon-resize-horizontal"></span></div>