Merge pull request #73 from 99linesofcode/rework-into-collection-repo

refactor!: move and pull code from dedicated submodules

Author: 99linesofcode

.gitmodules

@@ -0,0 +1,6 @@
+[submodule "ruby"]
+	path = ruby
+	url = git@github.com:99linesofcode/docker-ruby.git
+[submodule "php"]
+	path = php
+	url = git@github.com:99linesofcode/docker-php.git