diff --git a/dev/ci/docker_linux/Dockerfile b/dev/ci/docker_linux/Dockerfile
index 8f0e546059..1e9b1d7daf 100644
--- a/dev/ci/docker_linux/Dockerfile
+++ b/dev/ci/docker_linux/Dockerfile
@@ -100,6 +100,10 @@ ENV LANG en_US.UTF-8
 
 # Install coveralls and Firebase
 # This is why we need ruby installed.
-RUN gem install coveralls
-RUN gem install bundler
+# Skip all the documentation (-N) since it's just on CI.
+RUN gem install coveralls -N
+RUN gem install bundler -N
+# Install fastlane which is used on Linux to build and deploy Android
+# builds to the Play Store.
+RUN gem install fastlane -N