diff --git a/Dockerfile b/Dockerfile
index a04fbd66..6205ac94 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -59,3 +59,12 @@ RUN SECRET_KEY_BASE=`bin/rails secret` \
     bin/rails assets:precompile
 
 CMD ["rails", "server"]
+
+FROM production AS testing
+
+RUN bundle install --with test
+RUN gem install mailcatcher
+RUN yarn install --production=false
+RUN apt-get install -y libgtk2.0-0 libgtk-3-0 libgbm-dev libnotify-dev libgconf-2-4 libnss3 libxss1 libasound2 libxtst6 xauth xvfb
+
+CMD ["rails", "server"]