Adding a new ExecStartPre to service_def for service discovery
Environment variable refactoring
Executing docker run string with /bin/bash
Removing systemd based dependency declarations
setting up rspec [see 9377a2986e78d549f3a9ffa63ef9b7a9baa575d0]
Adding more  environment variables
Adding tests for the ServiceSorter and Services API and refactoring
Service spec
restructuring ServiceSorter for readability