Added comments

templates/GitLab-Runner/0/docker-compose.yml

@@ -5,18 +5,18 @@ services:
     image: gitlab/gitlab-runner:alpine # Alpine Linux image is designed to use only Docker as the method of spawning runners
     command:
       - register
-    environment:
-      REGISTER_NON_INTERACTIVE: true
-      CI_SERVER_URL: http://gitlab/
-      REGISTRATION_TOKEN: ${GITLAB_TOKEN}
-      RUNNER_EXECUTOR: docker
-      RUNNER_NAME: ${GITLAB_RUNNER_DESCRIPTION}
-      RUNNER_TAG_LIST: ${GITLAB_TAGS}
-      REGISTER_LOCKED: false
-      DOCKER_IMAGE: docker:latest
-      DOCKER_PRIVILEGED: true
-      DOCKER_EXTRA_HOSTS: gitlab:${GITLAB_IP}
-      DOCKER_HOST: tcp://docker:2375/
+    environment: # Options can be found by running "gitlab-runner register". More info found at https://docs.gitlab.com/runner/configuration/advanced-configuration.html
+      REGISTER_NON_INTERACTIVE: true                # Run registration unattended
+      CI_SERVER_URL: http://gitlab/                 # Runner URL
+      REGISTRATION_TOKEN: ${GITLAB_TOKEN}           # Runner's registration token
+      RUNNER_EXECUTOR: docker                       # Select executor, eg. shell, docker, etc.
+      RUNNER_NAME: ${GITLAB_RUNNER_DESCRIPTION}     # Runner name
+      RUNNER_TAG_LIST: ${GITLAB_TAGS}               # Tag list
+      REGISTER_LOCKED: false                        # Lock Runner for current project
+      DOCKER_IMAGE: docker:latest                   # Docker image to be used
+      DOCKER_PRIVILEGED: true                       # Give extended privileges to container
+      DOCKER_EXTRA_HOSTS: gitlab:${GITLAB_IP}       # Add a custom host-to-IP mapping
+      DOCKER_HOST: tcp://docker:2375/               # Docker daemon address
     external_links:
     {{- if .Values.GITLAB_LINK}}
       - ${GITLAB_LINK}:gitlab