Fix alpine-docker build in different arch issue

[crazywhalecc]

What does this PR do?

Fix alpine-docker build in different arch issue.

For spc-gnu-docker, I need more time to implement. It's so weird that when I switch the arch (between host arch and emulated arch), docker will get segment fault (on mac) or /bin/sh not found(on linux) issue, unless removing all the docker things and re-install it. (prune not work)

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[crazywhalecc]

Seems we cannot use qemu-user-static for centos docker. Its hosted multiarch/centos does not have arm64 architecture.

But when I pull the x86_64 centos in host x86_64, and build arm64 centos, it will get /bin/bash no such file or directory.

After I switch back to host arch, it still shows /bin/bash no such file or directory.

[henderkes]

Using this I can successfully run all the commands of the docker and get a working compilation environment.

docker run --rm --privileged multiarch/qemu-user-static --reset -p yes && docker run --rm -it --platform=linux/arm64 centos:7 bash

[crazywhalecc]

Using this I can successfully run all the commands of the docker and get a working compilation environment.

docker run --rm --privileged multiarch/qemu-user-static --reset -p yes && docker run --rm -it --platform=linux/arm64 centos:7 bash

Oh, I forgot -p yes. Looks good to me now. But it's really too slow 🥱

[henderkes]

Err I think we have a much bigger problem...
https://vault.centos.org/centos/7/sclo/

There's no aarch64...

[crazywhalecc]

Err I think we have a much bigger problem... https://vault.centos.org/centos/7/sclo/

There's no aarch64...

It's in /altarch/, not in /centos/.

[crazywhalecc]

Test suite:

• Host x86_64:
  • SPC_USE_ARCH=aarch64 bin/spc-alpine-docker
  • bin/spc-alpine-docker
  • SPC_USE_ARCH=aarch64 bin/spc-gnu-docker
  • bin/spc-gnu-docker
• Host aarch64:
  • SPC_USE_ARCH=x86_64 bin/spc-alpine-docker
  • bin/spc-alpine-docker
  • SPC_USE_ARCH=aarch64 bin/spc-gnu-docker
  • bin/spc-gnu-docker