add build cache for docker image and use itkavehome user for registry…

… authentication

.github/workflows/deploy_new_image_version.yaml

@@ -34,22 +34,24 @@ jobs:
         id: prepare-outputs
 
         run: |
-          echo "IMAGE_REPOSITORY=$(printf ${{ github.repository }} | tr '[:upper:]' '[:lower:]')" >> $GITHUB_ENV
+          echo "IMAGE_REPOSITORY_LOWERCASE=$(printf ${{ github.repository }} | tr '[:upper:]' '[:lower:]')" >> $GITHUB_ENV
 
       - name: Log in to GitHub Docker Registry
         uses: docker/login-action@v1
         with:
           registry: ghcr.io
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
+          username: itkavehome
+          password: ${{ secrets.ITKAVEHOME_GITHUB_TOKEN }}
 
       - name: Build&Push App container image
         uses: docker/build-push-action@v4
         with:
           file: Dockerfile
           push: true
           tags: |
-            ghcr.io/${{ env.IMAGE_REPOSITORY }}:${{ env.TAG }}
+            ghcr.io/${{ env.IMAGE_REPOSITORY_LOWERCASE }}:${{ env.TAG }}
+          cache-from: type=registry,ref=ghcr.io/${{ env.IMAGE_REPOSITORY_LOWERCASE }}:build-cache
+          cache-to: type=registry,ref=ghcr.io/${{ env.IMAGE_REPOSITORY_LOWERCASE }}:build-cache
 
       - name: Install Helm
         uses: azure/setup-helm@v3