switch to use inputs.

README.md

@@ -9,6 +9,7 @@ Get branch information without the `/ref/heads` prefix
       - uses: actions/checkout@v2
       - name: Get branch name
         uses: tj-actions/branch-name@v1
+        id: branch-name
       - name: Get brach Names
         run: |
           echo "${{ steps.branch-name.outputs.base_ref_branch }}"

action.yml

@@ -6,18 +6,6 @@ inputs:
     description: 'GITHUB_TOKEN or a Repo scoped PAT'
     required: true
     default: ${{ github.token }}
-  base_ref:
-    description: 'The target branch of a pull request'
-    default: ${{ github.base_ref }}
-    required: false
-  head_ref:
-    description: 'The source branch of a pull request'
-    default: ${{ github.head_ref }}
-    required: false
-  ref:
-    description: 'The branch that triggered the workflow run.'
-    default: ${{ github.ref }}
-    required: false
 
 outputs:
   base_ref_branch:
@@ -30,10 +18,6 @@ outputs:
 runs:
   using: 'docker'
   image: 'Dockerfile'
-  args:
-    - ${{ inputs.base_ref }}
-    - ${{ inputs.head_ref }}
-    - ${{ inputs.ref }}
 branding:
   icon: git-branch
   color: white

entrypoint.sh

@@ -2,6 +2,6 @@
 
 set -e
 
-echo "::set-output name=base_ref_branch::${0/refs\/heads\//}"
-echo "::set-output name=head_ref_branch::${1/refs\/heads\//}"
-echo "::set-output name=ref_branch::${2/refs\/heads\//}"
+echo "::set-output name=base_ref_branch::${INPUT_BASE_REF/refs\/heads\//}"
+echo "::set-output name=head_ref_branch::${INPUT_HEAD_REF/refs\/heads\//}"
+echo "::set-output name=ref_branch::${INPUT_REF/refs\/heads\//}"