buildkite: package definition (elastic#11399)

.buildkite/package.yml

@@ -0,0 +1,5 @@
+# yaml-language-server: $schema=https://raw.githubusercontent.com/buildkite/pipeline-schema/main/schema.json
+
+steps:
+  - label: "Example test"
+    command: echo "Hello!"

catalog-info.yaml

@@ -13,3 +13,39 @@ spec:
   type: tool
   owner: group:apm-server
   lifecycle: production
+
+---
+apiVersion: backstage.io/v1alpha1
+kind: Resource
+metadata:
+  name: buildkite-pipeline-apm-server-package
+  description: Buildkite Pipeline for packaging the APM Server
+  links:
+    - title: Pipeline
+      url: https://buildkite.com/elastic/apm-server-package
+
+spec:
+  type: buildkite-pipeline
+  owner: group:apm-server
+  system: buildkite
+  implementation:
+    apiVersion: buildkite.elastic.dev/v1
+    kind: Pipeline
+    metadata:
+      name: apm-server
+    spec:
+      repository: elastic/apm-server
+      pipeline_file: ".buildkite/package.yml"
+      provider_settings:
+        # TODO: delete this section once the BK pipeline works as expected.
+        build_branches: false # Disable builds from branches.
+        # Will not create any builds based on GitHub activity but it will be
+        # triggered using the GitHub Buildkite composite action.
+        #trigger_mode: none
+      cancel_intermediate_builds: false
+      skip_intermediate_builds: false
+      teams:
+        apm-server: {}
+        observablt-robots: {}
+        everyone:
+          access_level: READ_ONLY