fix: add docker push to trigger image push

cloudbuild.yaml

@@ -4,10 +4,17 @@ steps:
       [
         "build",
         "-t",
-        "us-central1-docker.pkg.dev/${PROJECT_ID}/interview-ai-detector/model-prediction",
+        "us-central1-docker.pkg.dev/${PROJECT_ID}/interview-ai-detector/model-prediction:latest",
         "./core-model-prediction",
       ]
 
+  - name: "gcr.io/cloud-builders/docker"
+    args:
+      [
+        "push",
+        "us-central1-docker.pkg.dev/${PROJECT_ID}/interview-ai-detector/model-prediction:latest",
+      ]
+
   - name: "gcr.io/google.com/cloudsdktool/cloud-sdk"
     entrypoint: "bash"
     args: