Merge pull request #380 from yuvipanda/debian-non-interactive

Tell apt-get to never ask questions

tljh/apt.py

@@ -43,8 +43,11 @@ def install_packages(packages):
     # Check if an apt-get update is required
     if len(os.listdir('/var/lib/apt/lists')) == 0:
         utils.run_subprocess(['apt-get', 'update', '--yes'])
+    env = os.environ.copy()
+    # Stop apt from asking questions!
+    env['DEBIAN_FRONTEND'] = 'noninteractive'
     utils.run_subprocess([
         'apt-get',
         'install',
         '--yes'
-    ] + packages)
+    ] + packages, env=env)