feat: allow consumer to set tag for CircleCI images

[kilahm]

This feature is modeled after https://github.com/CircleCI-Public/shellcheck-orb/blob/master/src/jobs/check.yml#L7 .

I'm attempting to author an Orb within my company's CircleCI Server v3 instance. We have imported the orbs published under the circleci/* namespace. When using the jobs defined in this Orb, I'm getting the following error message at the checkout step:

Using SSH Config Dir '/home/circleci/.ssh'
git version 2.38.0
Cloning git repository
Cloning into '.'...
error: cannot create async thread: Operation not permitted
fatal: fetch-pack: unable to fork off sideband demultiplexer

exit status 128
CircleCI received exit code 128

I'd like this feature as a work-around to the potential underlying issue described here. The workaround is to use an Alpine or Ubuntu 21.04 based image.

[orb-publisher]

Your development orb has been published. It will expire in 30 days.
You can preview what this will look like on the CircleCI Orb Registry at the following link:
https://circleci.com/developer/orbs/orb/circleci/orb-tools?version=dev:faeb34c3272eda2814f0c61a33bb41cf1c23e0b9

[orb-publisher]

Your development orb has been published. It will expire in 30 days.
You can preview what this will look like on the CircleCI Orb Registry at the following link:
https://circleci.com/developer/orbs/orb/circleci/orb-tools?version=dev:77d207d38f3907fb5ffeca96cef61cd4b0c439c0

[EricRibeiro]

@kilahm, thank you for your contribution 🙇

I changed the parameter from image-tag to tag to match the naming convention we have in other orbs. Additionally, I changed the default value for the pack and publish jobs. They fail with current as it's not a valid tag for CLI image.

[orb-publisher]

Your development orb has been published. It will expire in 30 days.
You can preview what this will look like on the CircleCI Orb Registry at the following link:
https://circleci.com/developer/orbs/orb/circleci/orb-tools?version=dev:b21ac739a57580616ea10cab6c8bf0cf28fbeadc

[orb-publisher]

Your development orb has been published. It will expire in 30 days.
You can preview what this will look like on the CircleCI Orb Registry at the following link:
https://circleci.com/developer/orbs/orb/circleci/orb-tools?version=dev:b21ac739a57580616ea10cab6c8bf0cf28fbeadc

[orb-publisher]

Your orb has been published to the CircleCI Orb Registry.
You can view your published orb on the CircleCI Orb Registry at the following link:
https://circleci.com/developer/orbs/orb/circleci/orb-tools?version=11.5.0

[kilahm]

Thanks for getting this pushed through!