need and more syntax
example
job, needs, if 사용 코드
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https://gist.github.com/seye2/1c4b35af99cb991fadd47ec2f48d6499

syntax
Workflow syntax for GitHub Actions
Workflow files use YAML syntax, and must have either a .yml or .yaml file extension. If you're new to YAML and want to learn more, see " Learn YAML in five minutes." You must store workflow files in the .github/workflows directory of your repository.
https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions

Seonglae Cho