Cannot Use Grep through Runner

I have installed multi-runner on a centos 7 vm to act as my build machine and configured 2 separate runners, 1 for docker to create a clean centos environment and 1 using shell to start testing with. Using a simple job, I keep finding the runners exiting with status code 1 once it hits the grep command in my job script. No additional information is displayed when attempting to debug through gitlab-runner with debug enabled. grep works fine when i get the environment up and test it through cmd.