Caching build

.github/workflows/qt.yml

@@ -121,6 +121,15 @@ jobs:
           cmake --version
           openssl version
           
+      - name: build cache
+        uses: actions/cache@v2.1.5
+        id: build-cached
+        with:
+          # A list of files, directories, and wildcard patterns to cache and restore
+          path: "D:/a/MultiMC5-Cracked/MultiMC5-Cracked/build"
+          # An explicit key for restoring and saving the cache
+          key: ${{ runner.os }}-MultiMC-build
+          
       - name: build
         shell: cmd
         run: |