From: Alex Bennée <alex.bennee@linaro.org>

Set the DEBIAN_FRONTEND and locale env vars to stop apt complaining so
much as we build the image.

Suggested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20170725133425.436-7-alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Fam Zheng <famz@redhat.com>
---
 tests/docker/dockerfiles/travis.docker | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tests/docker/dockerfiles/travis.docker b/tests/docker/dockerfiles/travis.docker
index 57ac8e1419..605b6e429b 100644
--- a/tests/docker/dockerfiles/travis.docker
+++ b/tests/docker/dockerfiles/travis.docker
@@ -1,4 +1,7 @@
 FROM quay.io/travisci/travis-ruby
+ENV DEBIAN_FRONTEND noninteractive
+ENV LANG en_US.UTF-8
+ENV LC_ALL en_US.UTF-8
 RUN apt-get update
 RUN apt-get -y build-dep qemu
 RUN apt-get -y install device-tree-compiler python2.7 python-yaml dh-autoreconf gdb strace lsof net-tools
-- 
2.13.5