diff --git a/Jenkinsfile b/Jenkinsfile
index 77880a7..4c93235 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -14,7 +14,7 @@ pipeline {
     stage('Test') {
       steps {
 	echo "My branch is: ${env.BRANCH_NAME}"
-        sh 'sbt -Dsbt.log.noformat=true -Dsbt.global.base=.sbt -Dsbt.boot.directory=.sbt -Dsbt.ivy.home=.ivy2 test'
+        sh '/usr/bin/xvfb-run sbt -Dsbt.log.noformat=true -Dsbt.global.base=.sbt -Dsbt.boot.directory=.sbt -Dsbt.ivy.home=.ivy2 test'
       }
     }
     stage('Document') {
diff --git a/README.md b/README.md
index 8ad44c6..2306dd2 100644
--- a/README.md
+++ b/README.md
@@ -263,7 +263,9 @@ sbt run      # To launch it
 ```
 
 If building with `openjdk`, you will need to install the Linux
-package `openjfx`.
+package `openjfx`. Also `xvfb` tool needs to be started prior to tests
+so that the GUI tests can launch even without display (if running from a display-less
+CI server like Jenkins).
 
 You can also use the provided docker image to use `Jenkinsfile`.
 
diff --git a/extras/docker/ci/Dockerfile b/extras/docker/ci/Dockerfile
index 0ec3b69..fa8b27b 100644
--- a/extras/docker/ci/Dockerfile
+++ b/extras/docker/ci/Dockerfile
@@ -1,8 +1,7 @@
 #Download base image ubuntu 16.04
 FROM mauriciojost/scala:latest
 
-RUN apt-get update
+COPY sources.list /etc/apt/sources.list                                                                                                       
+RUN apt-get update; exit 0                                                                                                                    
+RUN apt-get install -y graphviz xvfb openjfx
 
-RUN apt-get install -y graphviz
-
-RUN apt-get install -y openjfx
diff --git a/extras/docker/ci/README.md b/extras/docker/ci/README.md
index 2d6fa7c..e21430d 100644
--- a/extras/docker/ci/README.md
+++ b/extras/docker/ci/README.md
@@ -14,7 +14,7 @@ sudo apt-get install docker-ce
 Then launch:
 
 ```
-bash build.sh
+./build
 ```
 
 (you will need an account at `docker.com` to publish your image).
diff --git a/extras/docker/ci/build.sh b/extras/docker/ci/build
old mode 100644
new mode 100755
similarity index 87%
rename from extras/docker/ci/build.sh
rename to extras/docker/ci/build
index e676a20..a122e1b
--- a/extras/docker/ci/build.sh
+++ b/extras/docker/ci/build
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 docker login --username=mauriciojost
 
diff --git a/extras/docker/ci/sources.list b/extras/docker/ci/sources.list
new file mode 100644
index 0000000..6c1d2a1
--- /dev/null
+++ b/extras/docker/ci/sources.list
@@ -0,0 +1,10 @@
+deb http://archive.debian.org/debian/ stretch main non-free contrib
+deb-src http://archive.debian.org/debian/ stretch main non-free contrib
+
+deb http://archive.debian.org/debian-security/ stretch/updates main non-free contrib
+deb-src http://archive.debian.org/debian-security/ stretch/updates main non-free contrib
+
+deb http://deb.debian.org/debian stretch main
+deb http://deb.debian.org/debian stretch-updates main
+deb http://security.debian.org stretch/updates main
+