Feature request description

Currently there doesn't seem to be support for image pull retry and retry-delay for systemd.unit files.

This is a feature request to add those features.

Suggest potential solution

Support for controlling retries from a systemd unit container file.

Have you considered any alternatives?

No.

Additional context

An example where I have seen an issue is with this unit. The error that I got was:

Trying to pull quay.io/coreos-assembler/coreos-assembler:latest...
Pulling image //quay.io/coreos-assembler/coreos-assembler:latest inside systemd: setting pull timeout to 5m0s
Error: copying system image from manifest list: determining manifest MIME type for docker://quay.io/coreos-assembler/coreos-assembler:latest: reading manifest sha256:9d5c60213547ca29dda408ed4b26313d0d5ff390b9beb0cbdfdc2d6866b33eb9 in quay.io/coreos-assembler/coreos-assembler: received unexpected HTTP status: 502 Bad Gateway

I would expect to be able to configure things such that this error was retried.

The setting pull timeout to 5m0s suggests the code related to this is in https://github.com/containers/common/blob/34a90afcdc6d30277beeda3988c9a816d15160b9/libimage/copier.go#L378