From 5519300aae5978fe443625255d9093618e73ec3a Mon Sep 17 00:00:00 2001
From: Julian Fahrer <julian@fahrer.net>
Date: Wed, 7 Feb 2018 19:47:32 -0800
Subject: [PATCH] Use a manifest file to install dependencies [refs
 #44712567f522]

---
 developing/webapp/Dockerfile | 9 ++++++---
 developing/webapp/Gemfile    | 5 +++++
 2 files changed, 11 insertions(+), 3 deletions(-)
 create mode 100644 developing/webapp/Gemfile

diff --git a/developing/webapp/Dockerfile b/developing/webapp/Dockerfile
index 7d6c845..86bebe0 100644
--- a/developing/webapp/Dockerfile
+++ b/developing/webapp/Dockerfile
@@ -2,9 +2,12 @@ FROM ruby:2.4.3-alpine
 
 WORKDIR /app
 
-RUN apk update && apk add build-base postgresql-dev
-RUN gem install sinatra pg
+RUN apk add --no-cache \
+      build-base \
+      postgresql-dev
 
-COPY app.rb .
+COPY . .
+
+RUN bundle install
 
 CMD ["ruby", "app.rb"]
diff --git a/developing/webapp/Gemfile b/developing/webapp/Gemfile
new file mode 100644
index 0000000..09e5696
--- /dev/null
+++ b/developing/webapp/Gemfile
@@ -0,0 +1,5 @@
+source 'https://rubygems.org'
+
+gem 'sinatra', '2.0'
+gem 'pg', '1.0.0'
+