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 define them?

Sure! You can define environment variables like this:

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

What if I want to use secrets instead?

For secrets, you can use the secrets context. Define your secret in the repository settings and access it like this:

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

Can I pass environment variables to a Docker container?

Yes, you can pass environment variables to a Docker container using the env option in the services section or directly in the run command.