diff --git a/Dockerfile b/Dockerfile
index 0b0f781..532f101 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@ FROM node:6.3-slim
 MAINTAINER ipunkt Business Solutions <info@ipunkt.biz>
 
 # slim doesn't have python & git, so we install it
-RUN apt-get update && apt-get install -y python git && apt-get install -y bzip2
+RUN apt-get update && apt-get install -y python git bzip2 libfontconfig
 
 # configure git, setting up a user
 RUN git config --system user.name Docker && git config --system user.email docker@localhost
diff --git a/gulp/package.json b/gulp/package.json
index 36ca1e0..76b381a 100644
--- a/gulp/package.json
+++ b/gulp/package.json
@@ -45,7 +45,8 @@
     "karma-jasmine": "^1.1.0",
     "jasmine-core": "^2.6.2",
     "karma-phantomjs-launcher": "^1.0.4",
-    "phantomjs-prebuilt": "^2.1.14"
+    "phantomjs-prebuilt": "^2.1.14",
+    "karma-webpack": "^2.0.3"
   },
   "scripts": {
     "build": "gulp build",