Reorganize Dockerfile

This reorganized the Dockerfile to bundle all necessary gems separately to speed up Docker builds.
dennmart · Dec 28, 2016 · d8968f1 · d8968f1
1 parent 3e89a9b
commit d8968f1
Showing 1 changed file with 9 additions and 3 deletions.
diff --git a/Dockerfile b/Dockerfile
@@ -1,5 +1,11 @@
 FROM ruby:2.3.3
-ADD . /app
+RUN apt-get update && apt-get -y install cmake
+
+WORKDIR /tmp
+ADD Gemfile .
+ADD Gemfile.lock .
+RUN bundle install
+
 WORKDIR /app
-RUN apt-get update && apt-get -y install cmake && bundle install
-CMD rackup -o 0.0.0.0
+ADD . /app
+CMD ["rackup", "-o", "0.0.0.0"]