envPackage env manages the loading of environment variables. A lookup checks three sources in order: an in-memory stack, an env.yaml file in the current working directory or an ancestor directory, and the OS environment.
Get(key string) string and Lookup(key string) (string, bool) retrieve a variable’s value. Keys are case-sensitive.
Push(key, value string) and Pop(key string) manipulate the in-memory stack, which is useful for overriding variables during integration testing.