diff --git a/Dockerfile_build b/Dockerfile_build
index 6086fa9..834ae4e 100644
--- a/Dockerfile_build
+++ b/Dockerfile_build
@@ -14,8 +14,8 @@ RUN mvn package
 # ENTRYPOINT java -jar /code/target/javafxlibrary-*-SNAPSHOT-jar-with-dependencies.jar
 
 FROM ubuntu:16.04
-COPY --from=builder /code/target/javafxlibrary-*-jar-with-dependencies.jar /.
-COPY --from=builder /code/target/javafxlibrary-*-tests.jar /.
+COPY --from=builder /code/target/javafxlibrary-*-jar-with-dependencies.jar /
+COPY --from=builder /code/target/javafxlibrary-*-tests.jar /
 RUN echo "Built following jar files" && ls -latr /*.jar
 COPY entrypoint_build.sh /.
 RUN apt-get -qq update && apt-get dist-upgrade -y  && apt-get install -qq --no-install-recommends --allow-unauthenticated -y \
diff --git a/docker/robot-javafx-demo/Dockerfile b/docker/robot-javafx-demo/Dockerfile
index 81e3eea..0e75a4a 100644
--- a/docker/robot-javafx-demo/Dockerfile
+++ b/docker/robot-javafx-demo/Dockerfile
@@ -1,4 +1,4 @@
-FROM dorowu/ubuntu-desktop-lxde-vnc
+FROM dorowu/ubuntu-desktop-lxde-vnc:bionic
 
 ENV DEBIAN_FRONTEND noninteractive