You can store variables per job or globally using the variables keyword. The value for variables should be an array of key/value pairs that can be represented by strings or integers (for both key and value), although typically the key will be an all-capitalized string for ease of recognition. Any variables used should be of a non-sensitive nature; they are not considered an appropriate method for storing secrets. Locally defined variables will override their globally defined counterparts, but to have a job run with no access to globally defined variables, you should redeclare it with an empty array like so:
cool_job_name: variables: {}
