[profile stacker_master] role_arn = arn:aws:iam::1234567890:role/cassis-StackerMasterRole credential_source = EcsContainer role_session_name = stacker_master_role_session [profile stacker_execution] role_arn = arn:aws:iam::1234567890:role/cassis-StackerExecutionRole source_profile = stacker_master