Scheduled Trigger : CICD :Azure Devops

https://stackoverflow.com/questions/52429366/azure-devops-is-it-possible-to-schedule-a-release-for-a-specific-day-and-time/58980088#58980088

Edit your release and click on the "Schedule set" icon under the Artifacts. You can enable and "Add a new time" for repeated execution.

Azure Devops, Shell Script, YAML

https://docs.microsoft.com/en-us/azure/devops/pipelines/tasks/utility/bash?view=azure-devops

steps:
- task: Bash@3
  inputs:
    targetType: 'inline'
    script: echo $MYSECRET
  env:
    MYSECRET: $(Foo)