feat: add multiplatform support for docker image

[vladopajic]

docker image currently only runs on linux/amd64.

it would be nice to have docker image that supports multiple platforms linux/arm64, etc...

[s-vitaliy]

Hi @vladopajic, I use your action to validate code coverage in our repositories and I'm interested in this feature. Can I help you with the implementation of building your action for arm64?

[vladopajic]

@s-vitaliy hey! thanks, the issue is yours! let me know if you need my assistance in any way.

[s-vitaliy]

Hi @vladopajic, I have published the pull request: #233
The build is failing because of the lack of permissions, could you please help with them?

[vladopajic]

The build is failing because of the lack of permissions, could you please help with them?

tested in pr created by me and cherry picking your commits here #239. looks perfect, thanks!