Fix workflow cache

.github/workflows/core.yml

@@ -38,15 +38,17 @@ jobs:
       - uses: actions/checkout@v2
         with:
           submodules: recursive
-      - name: Build FFMpeg Libs
-        run: bash build-with-docker.sh install-deps ${{ matrix.script }}
-      - name: Cache multiple paths
+      - name: Cache libs
         uses: actions/cache@v2
         with:
           path: |
             build
             wasm/cache
           key: ffmpeg.wasm-core
+      - name: List cached libs
+        run: ls build/lib
+      - name: Build FFMpeg Libs
+        run: bash build-with-docker.sh install-deps ${{ matrix.script }}
   build-ffmpeg:
     runs-on: ubuntu-latest
     needs: build-libs
@@ -54,12 +56,6 @@ jobs:
       - uses: actions/checkout@v2
         with:
           submodules: recursive
-      - name: Build FFMpeg
-        run: |
-          bash build-with-docker.sh \
-            install-deps \
-            configure-ffmpeg \
-            build-ffmpeg
       - name: Cache multiple paths
         uses: actions/cache@v2
         with:
@@ -67,6 +63,12 @@ jobs:
             build
             wasm/cache
           key: ffmpeg.wasm-core
+      - name: Build FFMpeg
+        run: |
+          bash build-with-docker.sh \
+            install-deps \
+            configure-ffmpeg \
+            build-ffmpeg
       - uses: actions/upload-artifact@master
         with:
           name: ffmpeg-core