Scaffolder templates fail with no meaningful error output when running in Docker | Backstage | Page 1

hazy fossil Oct 18, 2022, 1:27 PM

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Hello!

I am trying to run a scaffolder template that my team has created with a couple of custom actions. Our Backstage instance is running in a Docker container.

Running locally with yarn dev, the scaffolder template works exactly as I'd expect. Attempting to run the scaffolder template in the deployed instance however fails with no error output whatsoever. In the backend logs I can see the POST to the /tasks endpoint to create a new task, but there are no errors.

The task screen stays on "Loading..." with no output, and in the task list in the scaffolder it shows the task as failed.

I'm not sure where to go from here - are there explicit permissions that need to be given in the Docker container?

green harness Oct 18, 2022, 2:11 PM

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I get that locally when I have a docker problem. Could you be hit by a docker-in-docker issue?

hazy fossil Oct 18, 2022, 2:16 PM

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I've already tried running it outside a container by adding the lines to the Dockerfile indicated in the documentation here: https://backstage.io/docs/features/software-templates/configuration#disabling-docker-in-docker-situation-optional

Software Template Configuration · Backstage Software Catalog and De...

Configuration options for Backstage Software Templates

hazy fossil Oct 19, 2022, 1:29 PM

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Still trying to figure this one out. I can run a docker image locally and it works, but deployed to a remote server it doesn't work. There's no meaningful logs output for the error... the task just shows as failed in the task list.

#Scaffolder templates fail with no meaningful error output when running in Docker