From 13d81e400b5350ca4efa599463c45487ea54e114 Mon Sep 17 00:00:00 2001
From: Beth Skurrie <beth@bethesque.com>
Date: Mon, 20 Jul 2020 15:38:07 +1000
Subject: [PATCH] chore: ensure matching bundler version is used in Dockerfile

---
 Dockerfile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Dockerfile b/Dockerfile
index 278977a..2e83cf1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,8 +12,9 @@ RUN set -ex && \
 # Install Gems
 WORKDIR $HOME
 COPY pact_broker/Gemfile pact_broker/Gemfile.lock $HOME/
+RUN cat Gemfile.lock | grep -A1 "BUNDLED WITH" | tail -n1 | awk '{print $1}' > BUNDLER_VERSION
 RUN set -ex && \
-  gem install bundler -v 2.1.4 && \
+  gem install bundler -v $(cat BUNDLER_VERSION) && \
   bundle install --no-cache --deployment --without='development test' && \
   rm -rf vendor/bundle/ruby/*/cache .bundle/cache && \
   apk del make gcc libc-dev