Download and run different architecture of image??

[left bough]

I'm running Mac (linux/arm64/v8) and like to use GitHubs super-linter (ghcr.io/super-linter/super-linter:latestdocker.io/alpine:latest) in a dagger module, running "dag.container().from_("ghcr.io/super-linter/super-linter:latest")..." but get ge error: "! failed to resolve source metadata for ghcr.io/super-linter/super-linter:latest: no match for platform in manifest: not found". This is due to GitHub don't providing a image version for Mac. Using docker locally I'm able to just add the flag "--platform linux/amd64" and run it anyway... can i achive this in dagger or am I bound to the os version?

[woeful edge]

hey there! yes, you can do this. You'll notice the container method has a platform argument where you can specify which platform you want that container image to be pulled for. Hope this helps!

Cheers!

[left bough]

Thanks for quick reply but i can not get it to work. if a use it in before or after the .from() i get the same error on the "next" command. Eg. "dag.container().platform("linux/arm64").from_("ghcr.io/super-linter/super-linter:latest").with_exec("xyz").stdout()" error: Function execution error: 'coroutine' object has no attribute 'from_'

When trying the .platform() it returns the platform but how do i use it to set the image i like?

[gaunt hornet]

I think what @woeful edge meant is you can directly pass the plateform when instantiate a container:

dag.container(platform="linux/amd64").from_("ghcr.io/super-linter/super-linter:latest").with_exec("xyz").stdout()

could you try this and see if it's works ☝️

[left bough]

Thanks... then i get

Stderr:
╭─ Error ──────────────────────────────────────────────────────────────────────╮
│ Function execution error: Method dagger.client.gen.Client.container() │
│ parameter platform='linux/amd64' was expected to be of type dagger.Platform │
│ | None. │
╰──────────────────────────────────────────────────────────────────────────────╯

It looks like i want a typ dagger.Platform... don't know how to add that as input

[gaunt hornet]

sure 👍

You need to first import the type:

import dagger
from dagger import  ... , Platform

Then create a new variable with the platform you want:

linux_amd64 = Platform("linux/amd64")

then you can use it:

dag.container(platform=platform).from_("ghcr.io/super-linter/super-linter:latest").with_exec("xyz").stdout()

I'm working on a mac arm and running the code above worked for me @left bough

[left bough]

Thanks @gaunt hornet work awesome 👍🏻

[safe fox]

@gaunt hornet do we have this documented or should I add it to our docs backlog?

[gaunt hornet]

The way platform should be passed to container is documented in the Python ref documentation:
https://dagger-io.readthedocs.io/en/sdk-python-v0.11.1/client.html#dagger.Client.container

It would be neat to have more example/usecases in our docs I suppose.

[safe fox]

I'd like the docs to make use cases first and the language an implementation detail. You have to dig into an SDK to learn what you can do with Dagger. That's counterintuitive