YAML syntax

example.yml

command:

  # interpeted as a string
  - helm push $${repo}:${DRONE_TAG}
  
  # interpreted as string
  - helm push foo:bar
  
  # if ${DRONE_TAG} is missing or empty,
  # it will be rendered as follows.
  #
  # interpreted as object/dict
  # with 1 key and no value (null)
  - helm push foo:
  
  # interpreted as string
  - foo:bar
  
  # interpreted as object/dict
  - foo: bar
  
  # interpreted as string
  - 'foo: bar'
  
  # interpreted as string
  - >-
    foo: bar