Some docker fixes

Rakefile

@@ -26,25 +26,27 @@ namespace :db do
   end
 end
 
-require 'rubocop/rake_task'
-RuboCop::RakeTask.new
+if ENV['SINATRA_ENV'] != 'production'
+  require 'rubocop/rake_task'
+  RuboCop::RakeTask.new
 
-require 'rspec/core/rake_task'
-RSpec::Core::RakeTask.new(:spec)
+  require 'rspec/core/rake_task'
+  RSpec::Core::RakeTask.new(:spec)
 
-desc 'Run all tests'
-task test: %i[rubocop spec]
+  desc 'Run all tests'
+  task test: %i[rubocop spec]
 
-require 'coveralls/rake/task'
-desc 'Run all tests and report to coverage tools'
-task test_and_report_coverage: [:test] do
-  Coveralls::RakeTask.new
-  Rake::Task['coveralls:push'].invoke
-end
+  require 'coveralls/rake/task'
+  desc 'Run all tests and report to coverage tools'
+  task test_and_report_coverage: [:test] do
+    Coveralls::RakeTask.new
+    Rake::Task['coveralls:push'].invoke
+  end
 
-GitHubChangelogGenerator::RakeTask.new :changelog do |config|
-  config.user = 'voxpupuli'
-  config.project = 'puppet_webhook'
-  config.future_release = PuppetWebhook::VERSION
+  GitHubChangelogGenerator::RakeTask.new :changelog do |config|
+    config.user = 'voxpupuli'
+    config.project = 'puppet_webhook'
+    config.future_release = PuppetWebhook::VERSION
+  end
 end
 # vim: syntax=ruby

build/docker/Dockerfile

@@ -2,10 +2,12 @@ FROM 'ruby:2.5' as rubybuilder
 ARG version=master
 
 # Replace with a pull from releases page
+RUN gem install bundler:2.1.4
+
 RUN apt-get install git && \
             git clone -b $version https://github.com/voxpupuli/puppet_webhook.git app/ && \
             cd /app && \
-            bundle install
+            bundle install --without development
 
 RUN mkdir /root/.ssh && echo "StrictHostKeyChecking no" >> /root/.ssh/config