multi-platform

[AkihiroSuda]

• image convert (not new in this commit)
• image inspect
• rmi
• pull
• push
• load
• save
• run
• commit
• build
• compose
• docs
• tests

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Multi-platform

nerdctl can execute non-native container images using QEMU.
e.g., ARM on Intel, and vice versa.

Preparation: Register QEMU to /proc/sys/fs/binfmt_misc

$ sudo nerdctl run --privileged --rm tonistiigi/binfmt --install all

$ ls -1 /proc/sys/fs/binfmt_misc/qemu*
/proc/sys/fs/binfmt_misc/qemu-aarch64
/proc/sys/fs/binfmt_misc/qemu-arm
/proc/sys/fs/binfmt_misc/qemu-mips64
/proc/sys/fs/binfmt_misc/qemu-mips64el
/proc/sys/fs/binfmt_misc/qemu-ppc64le
/proc/sys/fs/binfmt_misc/qemu-riscv64
/proc/sys/fs/binfmt_misc/qemu-s390x

The tonistiigi/binfmt container must be executed with --privileged.

See also https://github.com/tonistiigi/binfmt

Usage

Pull & Run

$ nerdctl pull --platform=arm64,s390x alpine

$ nerdctl run --rm --platform=arm64 alpine uname -a
Linux e6227935cf12 5.13.0-19-generic #19-Ubuntu SMP Thu Oct 7 21:58:00 UTC 2021 aarch64 Linux

$ nerdctl run --rm --platform=s390x alpine uname -a
Linux b39da08fbdbf 5.13.0-19-generic #19-Ubuntu SMP Thu Oct 7 21:58:00 UTC 2021 s390x Linux

Build & Push

$ nerdctl build --platform=amd64,arm64 --output type=image,name=example.com/foo:latest,push=true .

Or

$ nerdctl build --platform=amd64,arm64 -t example.com/foo:latest .
$ nerdctl push --all-platforms example.com/foo:latest

Compose

See examples/compose-multi-platform

---

Fix #103
Fix #280

[arpitjindal97]

Will it also work when running inside lima on MacOS ?

[AkihiroSuda]

Yes, of course.
Will be probably included in Lima v0.7.3.