Update dockerimage.yml

Author: darkmattercoder

.github/workflows/dockerimage.yml

@@ -0,0 +1,14 @@
+name: Docker Image CI
+
+on: [push]
+
+jobs:
+
+  build:
+ 
+    runs-on: ubuntu-latest
+ 
+    steps:
+    - uses: actions/checkout@v1
+    - name: Build the Docker image
+    - run: docker build --pull --cache-from darkmattercoder/qt-build:builder-5.12.4 --build-arg QT_VERSION_MAJOR=5 --build-arg QT_VERSION_MINOR=12 --build-arg QT_VERSION_PATCH=4 --build-arg QT_DOWNLOAD_BRANCH=official_releases --build-arg QT_TARBALL_NAMING_SCHEME=everywhere --build-arg CI_BUILD=2 --build-arg CORE_COUNT=2 --target=builder -t darkmattercoder/qt-build:builder-5.12.4 .