This is a simple template engine can be used in GitHub Actions.

• Required
• Specify the template file name.

• Required
• Specify the output file name.

Generate .env from .env.tmpl

• workflow.yml

uses: yuzuy/gha-tmpl@v1.1.0
with:
  tmpl-file: '.env.tmpl'
  out-file: '.env'
env:
  FOO_API_KEY: ${{ secrets.FOO_API_KEY }}
  BAR_API_KEY: 'barbarbar'

• .env.tmpl

FOO_API_KEY=${{FOO_API_KEY}}
BAR_API_KEY=${{BAR_API_KEY}}

• .env

FOO_API_KEY=foofoofoo # this value is set in repository secrets with the name FOO_API_KEY
BAR_API_KEY=barbarbar