Add DEBIAN_FRONTEND=noninteractive
diff --git a/tests/dockerfiles/Debian_testing.docker b/tests/dockerfiles/Debian_testing.docker
index 643472e..6dd688f 100644
--- a/tests/dockerfiles/Debian_testing.docker
+++ b/tests/dockerfiles/Debian_testing.docker
@@ -1,7 +1,7 @@
 FROM debian:testing
 MAINTAINER Piotr Krysik
 
-RUN apt-get update && apt-get install -y \
+RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
     cmake \
     autoconf \
     libtool \
diff --git a/tests/dockerfiles/Kali.docker b/tests/dockerfiles/Kali.docker
index 99b1cac..752311f 100644
--- a/tests/dockerfiles/Kali.docker
+++ b/tests/dockerfiles/Kali.docker
@@ -1,7 +1,7 @@
 FROM kalilinux/kali-linux-docker
 MAINTAINER Piotr Krysik
 
-RUN apt-get update && apt-get install -y \
+RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
     cmake \
     autoconf \
     libtool \
diff --git a/tests/dockerfiles/Ubuntu_16_04.docker b/tests/dockerfiles/Ubuntu_16_04.docker
index 21eafec..17698f8 100644
--- a/tests/dockerfiles/Ubuntu_16_04.docker
+++ b/tests/dockerfiles/Ubuntu_16_04.docker
@@ -1,7 +1,7 @@
 FROM ubuntu:16.04
 MAINTAINER Piotr Krysik
 
-RUN apt-get update && apt-get install -y \
+RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
     cmake \
     autoconf \
     libtool \
diff --git a/tests/dockerfiles/Ubuntu_16_04_nolibosmo.docker b/tests/dockerfiles/Ubuntu_16_04_nolibosmo.docker
index 879189e..a73c633 100644
--- a/tests/dockerfiles/Ubuntu_16_04_nolibosmo.docker
+++ b/tests/dockerfiles/Ubuntu_16_04_nolibosmo.docker
@@ -1,7 +1,7 @@
 FROM ubuntu:16.04
 MAINTAINER Piotr Krysik
 
-RUN apt-get update && apt-get install -y \
+RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
     cmake \
     autoconf \
     libtool \