Jenkinsfile: Fix dev image build fox ppc64le/s390x archs

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

Jenkinsfile

@@ -278,8 +278,7 @@ pipeline {
                         stage("Build dev image") {
                             steps {
                                 sh '''
-                                make bundles/buildx
-                                bundles/buildx build --load --force-rm --build-arg APT_MIRROR -t docker:${GIT_COMMIT} .
+                                docker buildx build --load --force-rm --build-arg APT_MIRROR -t docker:${GIT_COMMIT} .
                                 '''
                             }
                         }
@@ -392,8 +391,7 @@ pipeline {
                         stage("Build dev image") {
                             steps {
                                 sh '''
-                                make bundles/buildx
-                                bundles/buildx build --load --force-rm --build-arg APT_MIRROR -t docker:${GIT_COMMIT} .
+                                docker buildx build --load --force-rm --build-arg APT_MIRROR -t docker:${GIT_COMMIT} .
                                 '''
                             }
                         }