Run image compression

.github/workflows/compress-images.yml

@@ -0,0 +1,22 @@
+# Compress images on demand (workflow_dispatch), and on pushes to the default branch (push).
+# Open a Pull Request if any images can be compressed.
+name: Compress Images
+
+on:
+  workflow_dispatch:
+  push:
+    branches: "mg/compress-images"
+
+jobs:
+  compress:
+    name: calibreapp/image-actions
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Repo
+        uses: actions/checkout@v4
+      - name: Compress Images
+        id: calibre
+        uses: calibreapp/image-actions@1.1.0
+        with:
+          githubToken: ${{ secrets.GITHUB_TOKEN }}
+          compressOnly: false