add multi-arch docker build for linux/arm64/v8

[mitjaziv]

PR checklist

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• Ran the shell script under ./bin/ to update Petstore sample so that CIs can verify the change. (For instance, only need to run ./bin/{LANG}-petstore.sh and ./bin/security/{LANG}-petstore.sh if updating the {LANG} (e.g. php, ruby, python, etc) code generator or {LANG} client's mustache templates). Windows batch files can be found in .\bin\windows\.
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Description of the PR

This PR adds multi-arch build with docker buildx to add support for Apple M1 machines.

Closes #11650

[mitjaziv]

@frantuma @HugoMario What do you think about this change? Could we release this with next version so swagger-codegen would be supported on M1 machines.

[joaosa]

This would be a very welcome change to our CI pipelines 👍

[fellnerse]

Do you know when the first image will be available?

[mitjaziv]

For everyone who is waiting for this pull request in the meanwhile you can use this.

https://hub.docker.com/r/mitjaziv/swagger-codegen-cli
https://github.com/mitjaziv/swagger-codegen

[Dynehart]

Can one of the organization members take a look at this PR and merge it?
@char0n @frantuma @gracekarina @HugoMario @ponelat

[joshmurrayeu]

Similar response to @Dynehart above. Could someone look into updating this PR and merging? Thanks!

[joshmurrayeu]

Bump, again. Could a maintainer take a look into this PR?

@char0n @frantuma @gracekarina @HugoMario @ponelat

[andresvia]

@mitjaziv I'm not a maintainer but I would recommend to make only the change that is required.

Replace docker build with docker buildx build --platform linux/arm64/v8,linux/amd64

They are probably too busy to understand the rest of the change. Even though I agree it should be done. They probably don't use shellcheck 🤷

[wandergeek]

bump @char0n @frantuma @gracekarina @HugoMario @ponelat @HugoMario please, we really need this

[repositarian]

Bump
Somebody please check & merge this PR. We really need this
@char0n @frantuma @gracekarina @HugoMario @ponelat @HugoMario

[ponelat]

Hi folks, sorry for all the waiting. Will take a look into this. Thank you for your patience.

[mitjaziv]

Hi folks, sorry for all the waiting. Will take a look into this. Thank you for your patience.

I guess this is really old PR, and a lot was changed since it was opened, so I would need to re-investigate what needs to be changed, to fix pipelines.

[frantuma]

Thanks all for your patience, this has been replaced by the following changes adding multi-platform images builds:

#12290, #12291, #12292, #12293, #12294

similar changes are being applied to 3.0.0 branch