Add multi-architecture support (amd64 + arm64)#213
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Refine Docker image tag logic in manual installer workflow
This enables building Docker images for both linux/amd64 and linux/arm64 platforms, addressing the need for ARM64 support. Changes: - Dockerfile: Use TARGETARCH to dynamically select the correct OpenStudio package (x86_64 or arm64) based on the target platform - CI workflow: Add QEMU and Docker Buildx setup for cross-platform builds - deploy_docker.sh: Use `docker buildx build --push` with multi-platform support instead of separate tag/push commands This is possible because OpenStudio now provides ARM64 builds for Ubuntu (available since v3.8.0). Closes NatLabRockies#85 Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Summary
This PR adds support for building multi-architecture Docker images (linux/amd64 and linux/arm64), addressing the request in #85.
Changes
TARGETARCHbuild arg (automatically set by Docker buildx) to dynamically select the correct OpenStudio package based on target platformdocker tag+docker pushwithdocker buildx build --push --platform=linux/amd64,linux/arm64(required for multi-platform manifests)Why this works now
OpenStudio has been providing ARM64 builds for Ubuntu since v3.8.0:
OpenStudio-X.X.X-Ubuntu-24.04-arm64.debOpenStudio-X.X.X-Ubuntu-24.04-x86_64.debTesting
The existing test suite runs on amd64 (CI runners). The ARM64 build uses the same Dockerfile with TARGETARCH selecting the appropriate package.