text: from image.docker.schema2 import DOCKER_SCHEMA2_CONTENT_TYPES
  
  """Add schema2 media types
  
  Revision ID: c00a1f15968b
  Revises: 67f0abd172ae
  Create Date: 2018-11-13 09:20:21.968503
  
  """
  
  # revision identifiers, used by Alembic.
  revision = "c00a1f15968b"
  down_revision = "67f0abd172ae"
  
  
  def upgrade(op, tables, tester):
      for media_type in DOCKER_SCHEMA2_CONTENT_TYPES:
          op.bulk_insert(tables.mediatype, [{"name": media_type},])
  
  
  def downgrade(op, tables, tester):
      for media_type in DOCKER_SCHEMA2_CONTENT_TYPES:
          op.execute(
              tables.mediatype.delete().where(
                  tables.mediatype.c.name == op.inline_literal(media_type)
              )
          )
  