delete cache if exists

.github/workflows/docs.yaml

@@ -10,9 +10,27 @@ on:
 jobs:
   publish:
     runs-on: ubuntu-latest
+    env:
+      cache-key: nostr-geotags-docs
     permissions:
       contents: write
     steps:
+      - name: Restore Cache
+        id: cache-exists
+        uses: actions/cache/restore@v3
+        with:
+          path: ./cache
+          key: ${{ env.cache-key }}
+
+      - name: Delete Previous Cache
+        if: ${{ steps.cache-restore.outputs.cache-hit }}
+        continue-on-error: true
+        run: |
+          gh extension install actions/gh-actions-cache
+          gh actions-cache delete "${{ env.cache-key }}" --confirm
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
       - uses: actions/checkout@v3
 
       - name: Set up Node.js
@@ -38,7 +56,7 @@ jobs:
         uses: actions/cache/save@v3
         with:
           path: docs
-          key: nostr-geotags-docs
+          key: ${{ env.cache-key }}
 
       - name: Change branch
         run: git fetch --all && git checkout gh-pages
@@ -51,7 +69,7 @@ jobs:
         id: cache-restore
         with: 
           path: docs
-          key: nostr-geotags-docs
+          key: ${{ env.cache-key }}
           fail-on-cache-miss: true
 
       - name: Configure Git