An example of GitlabCI pipeline configuration
Don't forget to configure different environment variables in .gitlab-ci.yml file.
Also, it's mandatory to add following environment variables into your project CI/CD settings:
KUBECTL_STAGE, KUBECTL_PRE, KUBECTL_PROD - kubectl token for corresponding layer
SLACK_TOKEN - token for slack
GL_TOKEN - gitlab project token
SLACK_CHANNEL_STAGE_ID, SLACK_CHANNEL_PRE_ID, SLACK_CHANNEL_PROD_ID - slack channel id for notification about events from corresponding layer