Add poule.yml

Add configuration for `poule` (https://github.com/icecrime/poule) to
manage GitHub automations.

Signed-off-by: Arnaud Porterie (icecrime) <arnaud.porterie@docker.com>

poule.yml

@@ -0,0 +1,81 @@
+# Add a "status/0-triage" to every newly opened pull request.
+- triggers:
+      pull_request: [ opened ]
+  operations:
+      - type:       label
+        settings: {
+            patterns: {
+                status/0-triage:     [ ".*" ],
+            }
+        }
+
+# For every newly created or modified issue, assign label based on matching regexp using the `label`
+# operation, as well as an Engine-specific version label using `version-label`.
+- triggers:
+      issues:       [ edited, opened, reopened ]
+  operations:
+      - type:       label
+        settings: {
+            patterns: {
+                area/builder:        [ "dockerfile", "docker build" ],
+                area/distribution:   [ "docker login", "docker logout", "docker pull", "docker push", "docker search" ],
+                area/plugins:        [ "docker plugin" ],
+                area/networking:     [ "docker network", "ipvs", "vxlan" ],
+                area/runtime:        [ "oci runtime error" ],
+                area/security/trust: [ "docker_content_trust" ],
+                area/swarm:          [ "docker node", "docker service", "docker swarm" ],
+                platform/desktop:    [ "docker for mac", "docker for windows" ],
+                platform/freebsd:    [ "freebsd" ],
+                platform/windows:    [ "nanoserver", "windowsservercore", "windows server" ],
+            }
+        }
+      - type:       version-label
+
+# When a pull request is closed, attach it to the currently active milestone.
+- triggers:
+      pull_request: [ closed ]
+  operations:
+      - type:       version-milestone
+
+# Labeling a PR with `rebuild/<configuration>` triggers a rebuild job for the associated
+# configuration. The label is automatically removed after the rebuild is initiated. There's no such
+# thing as "templating" in this configuration, so we need one operation for each type of
+# configuration that can be triggered.
+- triggers:
+      pull_request: [ labeled ]
+  operations:
+      - type:       rebuild
+        settings: {
+            configurations: [ arm ],
+            label:          "rebuild/arm",
+        }
+      - type:       rebuild
+        settings: {
+            configurations: [ experimental ],
+            label:          "rebuild/experimental",
+        }
+      - type:       rebuild
+        settings: {
+            configurations: [ janky ],
+            label:          "rebuild/janky",
+        }
+      - type:       rebuild
+        settings: {
+            configurations: [ userns ],
+            label:          "rebuild/userns",
+        }
+      - type:       rebuild
+        settings: {
+            configurations: [ vendor ],
+            label:          "rebuild/vendor",
+        }
+      - type:       rebuild
+        settings: {
+            configurations: [ win2lin ],
+            label:          "rebuild/win2lin",
+        }
+      - type:       rebuild
+        settings: {
+            configurations: [ windowsRS1 ],
+            label:          "rebuild/windowsRS1",
+        }