(actions) generate new cache each day (#28)

Author: MatthijsBurgh

.github/workflows/main.yml

@@ -17,14 +17,17 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
+      - name: Get Date
+        id: get-date
+        run: |
+          echo "::set-output name=date::$(/bin/date -u "+%Y%m%d")"
       - name: Cache ccache
         uses: actions/cache@v3
         with:
           path: |
             ~/.ccache
-          key: ${{ runner.os }}-ccache-${{ github.event.repository.name }}-${{ github.sha }}
+          key: ${{ runner.os }}-ccache-${{ steps.get-date.outputs.date }}
           restore-keys: |
-            ${{ runner.os }}-ccache-${{ github.event.repository.name }}-
             ${{ runner.os }}-ccache-
       - name: Install
         run: |