When using --aws-batch, the --image argument is ignored

[corneliusroemer]

Current Behavior

When passing --image together with --aws-batch, the --image option is ignored. It is neither used nor is a warning emitted that this option will have no effect.

Expected behavior

Either use the image specified by the option or warn the user that the option is not supported and ignored.

How to reproduce

Run nextstrain build --image nextstrain/base:build-20230217T192833Z --aws-batch . and observe results

[joverlee521]

@corneliusroemer Is this related to the amd64 vs arm64 issue in docker-base?

We're using the --image option with --aws-batch for our ncov-ingest runs and it definitely works as expected there.

[corneliusroemer]

Yes sorry, I should have closed this after I realized the amd arm issue was the root cause here!