Improve konflux build time - single-arch on PR

Author: jotak

.tekton/netobserv-ebpf-agent-pull-request.yaml

@@ -28,6 +28,8 @@ spec:
     value: 5d
   - name: dockerfile
     value: Dockerfile.downstream
+  - name: build-platforms
+    value: ["linux/x86_64"]
   pipelineRef:
     name: build-pipeline
   taskRunTemplate: {}

.tekton/netobserv-ebpf-agent-push.yaml

@@ -6,7 +6,7 @@ metadata:
     build.appstudio.redhat.com/commit_sha: '{{revision}}'
     build.appstudio.redhat.com/target_branch: '{{target_branch}}'
     pipelinesascode.tekton.dev/max-keep-runs: "3"
-    build.appstudio.openshift.io/build-nudge-files: "hack/container_digest.sh"
+    build.appstudio.openshift.io/build-nudge-files: "hack/nudging/container_digest.sh"
     pipelinesascode.tekton.dev/on-cel-expression: event == "push" && target_branch
       == "main"
   creationTimestamp: null