Remember: CRM - Tasks Automation and child pages
While Copado provides built-in functionality for tasks automation (Copado - Manual Task Automation), in Gitlab we don't have this native possibility.
Still, we need to automate as much as possible and take advantage of the Apex Task Automation Templates.
Include the automation as part of the Jira pre-deployment or post-deployment field.
For example, if you have an apex script (created from Apex Task Automation Templates) that has to be executed as part of a post-deployment step, copy paste the script as part of the post-deployment Jira field.
If the script is too large, you can also attach it as a .zip file containing the script (i.e containing cccme-1234-post-deployment-script.apex) and reference it in the pre/post-deployment Jira fields.