Mod parse ENV to GITHUB_ENV

.github/workflows/build_restreamer_dev.yaml

@@ -31,14 +31,13 @@ jobs:
   build-docker:
     needs: build-frontend
     runs-on: [self-hosted]
-
     steps:
       - name: Checkout
         uses: actions/checkout@v2
       
       - name: Load ENV from file
         run: |
-          source .github_build/Build.restreamer-ui.env
+          cat .github_build/Build.restreamer-ui.env >> $GITHUB_ENV
 
       - name: Download React build artifact
         uses: actions/download-artifact@v2
@@ -54,6 +53,8 @@ jobs:
       - name: Docker meta
         id: meta
         uses: docker/metadata-action@v4
+        env:
+          CADDY_IMAGE: ${{ env.CADDY_IMAGE }}
         with:
           images: |
             datarhei/restreamer-ui