Github action for tagging a repo with the project version pulled from SBT (only create tag when the SBT version differs from the previous tag)

tag-sbt.yml

name: Create git tag from SBT

on:
  push:
    branch: master

jobs:
  Tag:
    runs-on: ubuntu-latest
    steps:
    - name: Checkout
      uses: actions/checkout@v2
    - name: Get most recent tag
      id: last_tag
      uses: WyriHaximus/github-action-get-previous-tag@0.2.0
      env:
        GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
    - name: Setup Scala
      uses: olafurpg/setup-scala@v5
    - name: Get version from SBT file
      id: sbt_version
      run: echo "::set-output name=version::$(sbt version | tail -n 1 | awk '{print $2}')"
    - name: Create tag
      if: ${{ steps.sbt_version.outputs.version != steps.last_tag.outputs.tag }}
      uses: richardsimko/update-tag@v1.0.3
      with:
        tag_name: ${{ steps.sbt_version.outputs.version }}
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}