Set executable flag on bin/docker-start and bin/init

[CasEbb]

bin/docker-start and bin/init are missing +x on their file modes so they aren't executable from the command line.

$ bin/init
zsh: permission denied: bin/init

[what-the-diff]

PR Summary

• Updated file permissions for essential program files
  In order to ensure smooth functioning of the program, the file permissions for both the docker-start and the init files have been updated to an 'executable' mode. This basically means these files now have the necessary permissions to run processes on the system.