Allow variable usage for tag

[cilerler]

I want to provide a tag number via environment variable set in earlier steps; however, it treats it as a string.

tag: $buildNumber

then I came up with the workaround below

tag: buildNumber

(I'm sorry, my shell scripting is not good enough, so I came up with something like this in here)

if [ ! -z "${TAG}" ]; then
  if TAGFROMENVVAR=$(printenv ${TAG}); then
    if [ ! -z "$TAGFROMENVVAR" ]; then
      TAG="${TAGFROMENVVAR}"
    fi
  fi
fi

it checks if the given name exists in an environment variable or not.

[meeDamian]

I agree that it's annoying vars aren't accepted by action inputs :(.

Using env vars indeed seems like the right approach.

[meeDamian]

I've added support for passing tags through an env var here: 351fcec .

You can test it now by (for now) running sth like:

steps:
  …

  - name: This step creates the tag name
    run: |
      TAG="v"
      TAG="${TAG}1"
      TAG="${TAG}.0"
      TAG="${TAG}.0"

      echo ::set-env name=RELEASE_TAG::"${TAG}"

  - uses: meeDamian/github-release@ad87d28
    with:
      token: ${{secrets.GITHUB_TOKEN}}
  …

Please let me know if it works for you :).

[cilerler]

It works for me since I can pass the environment I have.
Actually, the way you implemented is better since it restricts the variable name to use.

Thanks 🤗

[meeDamian]

Glad to hear that 😁!