Updated GitHub Actions cache examples

docs/publishing-your-site.md

@@ -40,8 +40,10 @@ contents:
               python-version: 3.x
           - uses: actions/cache@v3
             with:
-              key: ${{ github.ref }}
+              key: mkdocs-material-${{ github.sha }}
               path: .cache
+              restore-keys: |
+                mkdocs-material-
           - run: pip install mkdocs-material # (3)!
           - run: mkdocs gh-deploy --force
     ```
@@ -83,8 +85,10 @@ contents:
               python-version: 3.x
           - uses: actions/cache@v3
             with:
-              key: ${{ github.ref }}
+              key: mkdocs-material-${{ github.sha }}
               path: .cache
+              restore-keys: |
+                mkdocs-material-
           - run: apt-get install pngquant # (1)!
           - run: pip install git+https://${GH_TOKEN}@github.com/squidfunk/mkdocs-material-insiders.git
           - run: mkdocs gh-deploy --force

docs/setup/ensuring-data-privacy.md

@@ -484,7 +484,7 @@ carried out. You might want to:
     `.cache` directory in between builds. Taking the example from the
     [publishing guide], add the following lines:
 
-    ``` yaml hl_lines="15-18"
+    ``` yaml hl_lines="15-20"
     name: ci
       on:
         push:
@@ -501,8 +501,10 @@ carried out. You might want to:
                 python-version: 3.x
             - uses: actions/cache@v3
               with:
-                key: ${{ github.ref }}
+                key: mkdocs-material-${{ github.sha }}
                 path: .cache
+                restore-keys: |
+                  mkdocs-material-
             - run: pip install mkdocs-material
             - run: mkdocs gh-deploy --force
     ```

docs/setup/setting-up-social-cards.md

@@ -233,7 +233,7 @@ whether the social cards need to be regenerated. You might want to:
     `.cache` directory in between builds. Taking the example from the
     [publishing guide], add the following lines:
 
-    ``` yaml hl_lines="15-18"
+    ``` yaml hl_lines="15-20"
     name: ci
       on:
         push:
@@ -250,8 +250,10 @@ whether the social cards need to be regenerated. You might want to:
                 python-version: 3.x
             - uses: actions/cache@v3
               with:
-                key: ${{ github.ref }}
+                key: mkdocs-material-${{ github.sha }}
                 path: .cache
+                restore-keys: |
+                  mkdocs-material-
             - run: pip install mkdocs-material
             - run: mkdocs gh-deploy --force
     ```