How do I use environment variables in GitHub Actions?

How do I use environment variables in GitHub Actions?

You can use environment variables in GitHub Actions by defining them in your workflow file. You can set them at the job or step level.

Can you give me an example of how to set an environment variable?

Sure! You can set an environment variable like this:

jobs:
  build:
    runs-on: ubuntu-latest
    env:
      MY_VAR: 'Hello World'
    steps:
      - name: Print MY_VAR
        run: echo $MY_VAR

What if I want to use secrets as environment variables?

You can use GitHub Secrets by referencing them in your workflow like this:

env:
  MY_SECRET: ${{ secrets.MY_SECRET }}

Are there any limitations on environment variables?

Yes, there are some limitations. For example, environment variable names must be uppercase and can only contain letters, numbers, and underscores.