How to run script pre-deployment on AppPlatform

Hi,

I have an app on App Platform. It is gathering custom logs on local files. Every time I deploy the app, the log files are destroyed (I know this is expected behavior).

I do not want to forward my logs (to Papertrail, Datadog, or Logtail). Instead, I just want to upload them to an online storage service anytime the app redeploys, and I need this to happen BEFORE the redeploy starts and the local files are destroyed. I have coded all the upload functionality into a script that can be called from npm.

My question: Is there a way of telling App Platform to run a certain command before it destroys the local files on a redeploy? I can do it manually via the console but it’s extremely tedious to have to do it every time I merge in a PR or redeploy the app.

A.K.A is there a way of adding a pre-deploy step to the “deploy” pipeline that uses the currently deployed app?

I was looking into Workers, but it seems like they need a separate source, whereas I just want to run a command from within my existing main app component (so it can access the logs).

Thanks for your help!