If ``container-tag-method: latest``, uses the literal string ``latest``.
+If ``container-tag-method: stream``, uses the value of the variable ``stream``.
+
If ``container-tag-method: git-describe``, reads the tag from the
``git describe`` command on the repository, which requires that the repository
has a git tag. For example, if the most recent tag is 'v0.48.1', this