From bd293c3cb496e51c3a6aedaaf6f515f9c99977de Mon Sep 17 00:00:00 2001
From: Sam <sam.saffron@gmail.com>
Date: Wed, 8 Apr 2015 15:06:53 +1000
Subject: [PATCH] create an image for quickly switching ruby versions

---
 image/discourse_fast_switch/Dockerfile       | 16 +++++++++++
 image/discourse_fast_switch/create_switch.rb | 30 ++++++++++++++++++++
 2 files changed, 46 insertions(+)
 create mode 100644 image/discourse_fast_switch/Dockerfile
 create mode 100644 image/discourse_fast_switch/create_switch.rb

diff --git a/image/discourse_fast_switch/Dockerfile b/image/discourse_fast_switch/Dockerfile
new file mode 100644
index 0000000..d951243
--- /dev/null
+++ b/image/discourse_fast_switch/Dockerfile
@@ -0,0 +1,16 @@
+# Allow to easily switch Ruby version in images that derive off this
+
+FROM samsaffron/discourse:1.0.10
+
+MAINTAINER Sam Saffron "https://twitter.com/samsaffron"
+
+RUN apt-get -y install ruby bison autoconf &&\
+    echo install_package "openssl-1.0.1l" "https://www.openssl.org/source/openssl-1.0.1l.tar.gz#b2cf4d48fe5d49f240c61c9e624193a6f232b5ed0baf010681e725963c40d1d4" mac_openssl --if has_broken_mac_openssl > /src/2.2.2-github &&\
+    echo install_package "ruby-2.2.2-github" "https://github.com/SamSaffron/ruby/archive/2.2.2-github.tar.gz#407654b4fe9dd61ca7e26d8d7e4c8631" autoconf ldflags_dirs standard verify_openssl >> /src/2.2.2-github &&\
+    ruby-build /src/2.2.2-github /usr/ruby_22 &&\
+    apt-get -y remove ruby
+
+RUN cd / && rm -rf /src/ruby-build && ruby-build 2.0.0-p643 /usr/ruby_20
+
+ADD create_switch.rb /src/create_switch.rb
+RUN ruby /src/create_switch.rb
diff --git a/image/discourse_fast_switch/create_switch.rb b/image/discourse_fast_switch/create_switch.rb
new file mode 100644
index 0000000..ecb6e06
--- /dev/null
+++ b/image/discourse_fast_switch/create_switch.rb
@@ -0,0 +1,30 @@
+require 'fileutils'
+
+puts "-"*100,"creating switch","-"*100
+
+Dir.glob('/usr/ruby_20/*/**').each do |file|
+  file = file.gsub('/usr/ruby_20/', '/usr/local/')
+  FileUtils.rm(file) if File.exists?(file) && !File.directory?(file)
+end
+
+system("cd /var/www/discourse && git pull")
+
+['22','20'].each do |v|
+
+  bin = "/usr/local/bin/use_#{v}"
+
+File.write(bin, <<RUBY
+#!/usr/ruby_22/bin/ruby
+
+Dir.glob('/usr/ruby_#{v}/bin/*').each do |file|
+  `rm -f /usr/local/bin/\#{File.basename(file)}`
+  `cd /usr/local/bin && ln -s \#{file}`
+end
+
+RUBY
+)
+
+  system("chmod +x #{bin}")
+  system("use_#{v} && gem update --system && gem install bundler")
+  system("use_#{v} && cd /var/www/discourse && sudo -u discourse bundle install --deployment --without test --without development")
+end
-- 
2.25.1