From e62047fbaf72bca3d6eb7f0bda502b63a5c4161c Mon Sep 17 00:00:00 2001
From: Edward Anderson <nilbus@nilbus.com>
Date: Mon, 24 Jul 2017 21:24:07 -0400
Subject: [PATCH] Take advantage of bundler's parallelism

20 jobs is somewhat arbitrary.

Parallelism need not be limited to the number of logical cores. Because
installing gems is such an IO-intensive task, generally not CPU-bound,
we can typically see big speed wins by starting many at once.
---
 Dockerfile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Dockerfile b/Dockerfile
index 4e74819c0b..e90874718b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -7,4 +7,4 @@ RUN curl -sL https://deb.nodesource.com/setup_4.x | bash - && \
 WORKDIR /exercism
 
 COPY Gemfile Gemfile.lock /exercism/
-RUN bundle install
+RUN bundle install --jobs=20