fix: Masternet to run with the nightly tag

.github/workflows/nightly-masternet-deploy.yml

@@ -2,46 +2,49 @@
 name: Nightly masternet deploy
 on:
   schedule:
-    # Run the workflow every night at 2:00 AM UTC.
-    - cron: "0 2 * * *"
+    # Run the workflow every night at 4:00 AM UTC. After the nightly tag has been created
+    - cron: "0 4 * * *"
   workflow_dispatch:
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: false
 
 jobs:
-  get-latest-commit:
+  get-latest-tag:
     runs-on: ubuntu-latest
     outputs:
-      commit: ${{ steps.get_commit.outputs.COMMIT }}
+      tag: ${{ steps.get_tag.outputs.TAG }}
 
     steps:
       - uses: actions/checkout@v4
 
-      - name: Get latest published commit
-        id: get_commit
+      - name: Get latest nightly tag
+        id: get_tag
         run: |
-          COMMIT=$(git rev-parse HEAD)
-          TAGS=$(curl -s https://registry.hub.docker.com/v2/repositories/aztecprotocol/aztec/tags/$COMMIT-amd64)
+          # Check if tonight's tag has been published to docker hub
+          current_version=$(jq -r '."."' .release-please-manifest.json)
+          echo "Current version: $current_version"
+          # Format the tag as: <current_version>-nightly.<YYYYMMDD>
+          nightly_tag="${current_version}-nightly.$(date -u +%Y%m%d)"
+
+          TAGS=$(curl -s https://registry.hub.docker.com/v2/repositories/aztecprotocol/aztec/tags/$nightly_tag)
           if [[ "$TAGS" != *"not found"* ]]; then
-              DIGEST=$(echo $TAGS | jq -r '.images[] | select(.architecture=="amd64") | .digest' | tr -d '"')
-              echo "Deploying digest: $DIGEST"
-              echo "COMMIT=$DIGEST" >> $GITHUB_OUTPUT
+              echo "TAG=$nightly_tag >> $GITHUB_OUTPUT
           else
-            echo "Commit $COMMIT not published to docker hub"
+            echo "Tag $nightly_tag not published to docker hub"
             exit 1
           fi
 
   deploy-network:
-    needs: get-latest-commit
+    needs: get-latest-tag
     uses: ./.github/workflows/network-deploy.yml
     with:
       ref: master
       cluster: aztec-gke-private
       namespace: master-rc-1
       values_file: rc-1.yaml
-      aztec_docker_image: aztecprotocol/aztec@${{ needs.get-latest-commit.outputs.commit }}
+      aztec_docker_image: aztecprotocol/aztec:${{ needs.get-latest-tag.outputs.tag }}
       deployment_mnemonic_secret_name: junk-mnemonic
       respect_tf_lock: "false"
       run_terraform_destroy: "true"