trying the next build stage

Author: darkmattercoder

.github/workflows/dockerimage.yml

@@ -76,4 +76,5 @@ jobs:
       - uses: actions/checkout@v1
       - run: |
           docker build --pull --cache-from darkmattercoder/qt-build:base-$VERSION $ARGS --target=base -t darkmattercoder/qt-build:base-$VERSION .
+          docker build --pull --cache-from darkmattercoder/qt-build:builder-$VERSION $ARGS --target=builder -t darkmattercoder/qt-build:builder-$VERSION .
         env: ${{ matrix.env }}