action: Use inputs to work around github actions empty variables

Even using env doesn't seem to work, so let's try the other workaround
from the issue, using inputs default values to capture the right values
before they become empty.

diff --git a/action.yaml b/action.yaml
index 7e52dc45d477bcf6c339de36c06b814650578cee..457687d6c9293680af2917a21b73d4a8be48679a 100644 (file)
--- a/action.yaml
+++ b/action.yaml
@@ -1,6 +1,12 @@
 name: setup-mkosi
 description: Install mkosi
 
+# https://github.com/actions/runner/issues/2473
+inputs:
+  action_ref:
+    default: ${{ github.action_ref }}
+  action_repository:
+    default: ${{ github.action_repository }}
 runs:
   using: composite
   steps:
@@ -79,13 +85,9 @@ runs:
         set -x
         if [[ ! -d "${{ github.action_path }}/.git" ]]; then
             rm -rf "${{ github.action_path }}"
-            git clone "https://github.com/$GITHUB_ACTION_REPOSITORY" "${{ github.action_path }}"
-            git -C "${{ github.action_path }}" checkout "$GITHUB_ACTION_REF"
+            git clone "https://github.com/${{ inputs.action_repository }}" "${{ github.action_path }}"
+            git -C "${{ github.action_path }}" checkout "${{ inputs.action_ref }}"
         fi
-      env:
-        # https://github.com/actions/runner/issues/2473
-        GITHUB_ACTION_REPOSITORY: ${{ github.action_repository }}
-        GITHUB_ACTION_REF: ${{ github.action_ref }}
 
     - name: Install
       shell: bash