Update .buildkite/pipeline.package.mbp.yml

Author: v1v

.buildkite/pipeline.package.mbp.yml

@@ -1,6 +1,7 @@
 # yaml-language-server: $schema=https://raw.githubusercontent.com/buildkite/pipeline-schema/main/schema.json
 name: "fleet server package mbp"
 env:
+  REPO: 'fleet-server'
   IMAGE_UBUNTU_X86_64: "family/core-ubuntu-2204"
   IMAGE_UBUNTU_ARM_64: "core-ubuntu-2204-aarch64"