1 files changed, 2 insertions, 0 deletions
diff --git a/Dockerfile b/Dockerfile
index c74b048..41971a2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,7 @@
 FROM ruby:2.5
 
+RUN gem update --system --quiet && gem install  bundler -v '~> 2.2'
+ENV BUNDLER_VERSION 2.2
 RUN bundle config --global frozen 1
 WORKDIR /usr/src/app
 COPY Gemfile Gemfile.lock ./