[Os-builder] How to join OS-Builder SIG Group?

你们好： 我是王海涛，openEuler新来的实习生。 我移植了openEuler到WSL中，想把代码贡献到社区。 想知道怎么加入OS-Builder sig组呀？是在https://gitee.com/openeuler/community 底下提issue吗？ 还是参加明天的例会呀？

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Hello guys in OS-Builder: I am Wang Haitao, a new intern at OpenEuler. I have ported OpenEuler to WSL and want to contribute the code to the community

I want to know how to join OS-Builder SIG Group? Should I put an issue under the https://gitee.com/openeuler/community? Or attend tomorrow's OS-builder meeting?