cache the latest keyring versions for mmdebstrap

.github/workflows/generate-keyring-data.yaml

@@ -0,0 +1,54 @@
+name: "Generate list of latest keyrings for Debian & Ubuntu"
+on:
+  schedule: [ { cron: '0 0 * * 0' } ]
+  workflow_dispatch:
+
+concurrency:
+  group: redirector
+  cancel-in-progress: false
+
+jobs:
+  generate-keyring-data:
+    runs-on: ubuntu-24.04
+    name: "Generate Keyring Data"
+    steps:
+
+      - name: Checkout repository
+        uses: actions/checkout@v5
+        with:
+          fetch-depth: 0
+          path: armbian.github.io
+
+      - name: "Generate keyring files"
+        run: |
+          NEWEST_SUITE=$(curl --max-time=30 --compressed -fLs https://changelogs.ubuntu.com/meta-release | grep '^Dist:'| tail -n 1 | awk '{print $NF}')
+          # NOTE: this service on PUC returns a long list of ISO-3166-2 country code prefixed archive.ubuntu.com mirrors [among others]
+          # We remove that prefix as it's better to use the rotation. the number in the regex is b/c nz has nz and nz2
+          # example URL returned: http://nz2.archive.ubuntu.com/ubuntu/pool/main/u/ubuntu-keyring/ubuntu-keyring_2023.11.28.1_all.deb
+          PKG_URL=$(curl --max-time=30 --compressed -fLs "https://packages.ubuntu.com/${NEWEST_SUITE}/all/ubuntu-keyring/download" | \
+            grep -oP 'https?://\S+archive.ubuntu.com/ubuntu/pool/main/u/\S+\.deb' | tail -n 1 | sed -E 's#://[a-z][a-z][0-9]?\.#://#')
+          [[ -z "${PKG_URL}" ]] && (echo "fetch_newest_keyring failed - unable to find newest ubuntu-keyring package"; exit 1)
+          echo $PKG_URL > latest-ubuntu-keyring.txt
+
+          for p in debian-archive-keyring debian-ports-archive-keyring; do
+            PKG_URL=$(curl --max-time=30 --compressed -fLs "https://packages.debian.org/sid/all/${p}/download" | \
+              grep -oP "https?://(deb|ftp)\.debian\.org/debian/pool/main/d/${p}/${p}_\S+\.deb")
+            [[ -z "${PKG_URL}" ]] && (echo "fetch_newest_keyring failed - unable to find newest $p package"; exit 1)
+            echo $PKG_URL > latest-$p.txt
+          done
+      - name: Commit changes if any
+        run: |
+          cd armbian.github.io
+          git checkout data
+          mkdir -p data/
+          mv ${{ github.workspace }}/latest-*keyring*.txt data/
+          git config --global user.name "github-actions"
+          git config --global user.email "github-actions@github.com"
+          git add data/.
+          git diff --cached --quiet || git commit -m "Update keyring data files"
+          git push
+      - name: "Run Bigin update action"
+        uses: peter-evans/repository-dispatch@v4
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          event-type: "Bigin update"

.github/workflows/generate-motd.yaml

@@ -42,7 +42,7 @@ jobs:
           git config --global user.name "github-actions"
           git config --global user.email "github-actions@github.com"
           git add data/.
-          git diff --cached --quiet || git commit -m "Update WEB indes files"
+          git diff --cached --quiet || git commit -m "Update WEB index files"
           git push
 
       - name: "Run Bigin update action"