Add shared matrix.json for actions

[ladisgin]

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[korifey]

@akuleshov7 @petertrr could you please tell is "matrix" the only way to parametrize the build?

[petertrr]

@akuleshov7 @petertrr could you please tell is "matrix" the only way to parametrize the build?

There is also an option with triggering a workflow manually and providing parameters as inputs: https://docs.github.com/en/actions/learn-github-actions/events-that-trigger-workflows#workflow_dispatch. I haven't tried this approach myself, though.

In our projects the only parameter we use is a git tag, and we deduce current version from it. We use matrix only when it's required to execute CI in different environments, like different OS, different JDK version and so on.

[orchestr7]

@korifey also there is no mechanism for sharing the os matrix between actions, and I suppose it is done intentionally. In this case you will always understand what you are doing and in which OS.

Are you sure that you really need that?

[korifey]

@akuleshov7 in our build, we have to make same dependency in several places of yml.
Also because of this issue it can't be parametrized normally.

This piece of code:

      # It is impossible to parametrize image via workflow environment,
      # so its name is hard-coded.
      # https://github.com/actions/runner/issues/480
      image: ghcr.io/unittestbot/utbotcpp/base_env:24-11-2021

[korifey]

@akuleshov7 @petertrr could you please tell is "matrix" the only way to parametrize the build?

There is also an option with triggering a workflow manually and providing parameters as inputs: https://docs.github.com/en/actions/learn-github-actions/events-that-trigger-workflows#workflow_dispatch. I haven't tried this approach myself, though.

In our projects the only parameter we use is a git tag, and we deduce current version from it. We use matrix only when it's required to execute CI in different environments, like different OS, different JDK version and so on.

@petertrr here I misused word "parameter". I mean that we need some constants storage, like .properties in Java for deduplication of exact versions like base_env:24-11-2021

[korifey]

@ladisgin LGTM!