ci(deapp): update Docker image configuration for specific registry

Author: TartanLeGrand

.github/workflows/deapp-publish.yml

@@ -9,10 +9,14 @@ jobs:
   build-test:
     uses: iExecBlockchainComputing/github-actions-workflows/.github/workflows/docker-build.yml@fix/docker/types
     with:
-      image-name: 'protected-data-delivery-dapp'
+      image-name: 'docker-regis.iex.ec/product/protected-data-delivery-dapp'
       image-tag: ${{ github.ref }} # Use the tag of the commit
       push: true
       dockerfile: 'packages/protected-data-delivery-dapp/Dockerfile'
       security-scan: false
       hadolint: false
-      # Refactor for target one specific registry
+      registry: 'docker-regis.iex.ec'
+      context: 'packages/protected-data-delivery-dapp'
+    secrets:
+      username: ${{ secrets.REGIS_USERNAME }}
+      password: ${{ secrets.REGIS_PASSWORD }}