five copies of release command ran on deploy

ran a deploy, and it ran 5 copies of my release task. a brief sample of the output follows. should the release task only run once during a deploy, or is this normal?

--> You can detach the terminal anytime without stopping the deployment
==> Release command detected: knex migrate:latest

--> This release will not be available until the release command succeeds.
         Starting instance
         Configuring virtual machine
         Pulling container image
         Starting instance
         Configuring virtual machine
         Pulling container image
         Starting instance
         Configuring virtual machine
         Pulling container image
         Starting instance
         Configuring virtual machine
         Pulling container image
         Starting instance
         Configuring virtual machine
         Pulling container image
         Starting instance
         Configuring virtual machine
         Pulling container image
         Unpacking image
         Unpacking image
         Unpacking image
         Unpacking image
         Unpacking image
         Unpacking image