Create and upload archive artifact

.github/workflows/build-pages.yaml

@@ -1,7 +1,19 @@
 # This is a basic workflow to help you get started with Actions
 
 name: Build and Publish to Github pages
-
+inputs:
+  name:
+    description: "Artifact name"
+    required: false
+    default: "github-pages"
+  path:
+    description: "Path of the directory containing the static assets."
+    required: true
+    default: "_site/"
+  retention-days:
+    description: "Duration after which artifact will expire in days."
+    required: false
+    default: "1"
 # Controls when the workflow will run
 on:
   # Triggers the workflow on push or pull request events but only for the "main" branch
@@ -48,3 +60,24 @@ jobs:
         run: npm run build:pre-11ty
       - name: Build eleventy
         run: npm run build:11ty --pathPrefix=scores-ly
+      - name: Build artifact archive
+        run: |
+          chmod -c -R +rX "$INPUT_PATH" | while read line; do
+            echo "::warning title=Invalid file permissions automatically fixed::$line"
+          done
+          tar \
+            --dereference --hard-dereference \
+            --directory "$INPUT_PATH" \
+            -cvf "$RUNNER_TEMP/artifact.tar" \
+            --exclude=.git \
+            --exclude=.github \
+            .
+        env:
+          INPUT_PATH: ${{ inputs.path }}
+      - name: Upload artifact
+        uses: actions/upload-artifact@v3
+        with:
+          name: ${{ inputs.name }}
+          path: ${{ runner.temp }}/artifact.tar
+          retention-days: ${{ inputs.retention-days }}
+          if-no-files-found: error