Add docker glossary

Author: Parinda Darden

sites/en/intro-to-rails/_docker-glossary.md

@@ -0,0 +1,11 @@
+**docker-compose run web <<commands>>** runs commands in web service container.
+**docker-compose run web bin/rails c** runs rails console in web service container.
+**docker-compose run web bash** runs bash to interact with the directory inside
+the web service container.
+**docker-compose build** build image when `Dockerfile` changes or when you want to update or add gems.
+**docker-compose up** starts up containers.
+**docker-compose up -d** starts up containers **in the background**.
+**docker-compose down** stops containers.
+**docker-compose ps** lists container processes, container name, container id.
+**docker attach <<contianer_name>>** attaches to the named container to interact
+with `binding.pry`. `Control + p`, `Control + q`, detach from container.

sites/en/intro-to-rails/glossary.step

@@ -4,8 +4,10 @@ span "Have a look at the "
 a 'general Glossary', href: '#general-glossary'
 span ", the "
 a 'Command Line Glossary', href: '#command-line-glossary'
-span ", and the "
+span ", the "
 a 'Ruby and Rails Glossary', href: '#ruby-and-rails-glossary'
+span ", and the "
+a 'Docker Glossary', href: '#docker-glossary'
 span "."
 
 a name: 'general-glossary'
@@ -22,3 +24,8 @@ a name: 'ruby-and-rails-glossary'
 situation "Ruby and Rails Glossary" do
   insert '../installfest/ruby-and-rails-glossary'
 end
+
+a name: 'docker-glossary'
+situation "Docker Glossary" do
+  insert 'docker-glossary'
+end