Each container configuration can have an environment setting, or defaults
    to base

def envs():
    '''
    Each container configuration can have an environment setting, or defaults
    to base
    '''
    saltenvs = []
    for container in __opts__.get('azurefs', []):
        saltenvs.append(container.get('saltenv', 'base'))
    # Remove duplicates
    return list(set(saltenvs))