diff --git a/Dockerfile b/Dockerfile
index 2d3e526..32eb2b0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1 +1,14 @@
-FROM opengamer/android-sdk-gradle-fastlane
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+# This Dockerfile creates a static build image for CI
+# https://github.com/menny/docker_android
+FROM menny/android:1.13.6 
+
+# install OS packages
+RUN apt-get --quiet update --yes
+RUN apt-get --quiet install --yes ruby ruby-dev
+# We use this for xxd hex->binary
+RUN apt-get --quiet install --yes vim-common
+# install FastLane
+COPY Gemfile.lock .
+COPY Gemfile .
+RUN gem install bundler
+RUN bundle install
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