Does anybody know if the AWS ECR orb support parallelism and if so, how to configure it?
What kind of functionality would you expect by enabling parallelism?
Parallelism is enabled at a job-level and shouldn’t have any effect on an orb.
https://circleci.com/docs/2.0/parallelism-faster-jobs/
However if there is some specific parallelism specific feature that should be enabled, we could look into that.
One such example of a feature enabled by parallelism: Running Tests in Parallel - CircleCI
Essentially, from inside the shell, it is possible to determine the node_index of the job (which # in parallel), and we can use that number to influence our bash inside an orb.
https://circleci.com/docs/2.0/env-vars/#built-in-environment-variables