Add testing workflow

.github/workflows/tests.yml

@@ -0,0 +1,18 @@
+name: Test a recheck
+
+on:
+  workflow_dispatch:
+    inputs:
+      package_url:
+        description: 'URL to a source package tarball'
+        required: true
+
+jobs:
+  recheck:
+    runs-on: ubuntu-latest
+    timeout-minutes: 120
+    steps:
+      - name: Test recheck
+        uses: r-universe-org/recheck@HEAD
+        with:
+          package: ${{ github.event.inputs.package_url }}

action.yml

@@ -2,14 +2,14 @@ name: 'Delete packages'
 description: 'Delete removed packages from the package server'
 inputs:
   package:
-    description: 'Name of the package'
+    description: 'Path or URL to source package tarball'
     required: true
   universe:
     description: 'Which universe to check in'
     required: false
 runs:
   using: 'docker'
-  image: 'docker://ghcr.io/r-universe-org/delete-packages'
+  image: 'docker://ghcr.io/r-universe-org/recheck'
   env:
     PACKAGE: ${{ inputs.package }}
     UNIVERSE: ${{ inputs.universe }}