Bensuperpc/dockcross
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ci: push multi-arch images with manifest-tool

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Instead of buildah.

- Simplified workflow: manifest-tool provides a more straightforward command-line interface for creating manifest lists
- Better integration: manifest-tool is specifically designed for manifest list/OCI index creation and management
- Cross-platform compatibility: Works with both Docker v2.2 manifest lists and OCI v1 indexes
- Template-based approach: The --template and --platforms flags provide a cleaner way to specify multi-arch images
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Matt McCormick
2025-09-24 11:24:33 -04:00
parent 6ea98ba7f7
commit 13872ace65
3 changed files with 24 additions and 8 deletions
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README.md
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@@ -620,6 +620,14 @@ Note that the architecture is now `aarch64` instead of `amd64`, so it runs nativ
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## Multi-architecture Image Creation
For creating multi-architecture container images, this project uses [manifest-tool](https://github.com/estesp/manifest-tool) to create and manage manifest lists that combine platform-specific images into a single multi-platform reference. This allows container runtimes to automatically select the appropriate image based on the target architecture.
The multi-architecture images are built on different architectures (amd64 and arm64) and then combined using manifest-tool's `push from-args` command, which creates manifest lists pointing to the individual platform-specific images.
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Credits:
- [sdt/docker-raspberry-pi-cross-compiler](https://github.com/sdt/docker-raspberry-pi-cross-compiler), who invented the base of the **dockcross** script.