Rebuild Maubot when the Fedora image changes

Signed-off-by: Aurélien Bompard <aurelien@bompard.org>

roles/openshift-apps/maubot/files/imagestream.yml

@@ -6,3 +6,22 @@ items:
     kind: ImageStream
     metadata:
       name: maubot
+  # The Fedora image
+  - apiVersion: image.openshift.io/v1
+    kind: ImageStream
+    metadata:
+      name: fedora
+      labels:
+        build: maubot-build
+    spec:
+      lookupPolicy:
+        local: false
+      tags:
+      - name: "38"
+        from:
+          kind: DockerImage
+          name: quay.io/fedora/fedora:38
+        importPolicy:
+          scheduled: true
+        referencePolicy:
+          type: Source

roles/openshift-apps/maubot/templates/buildconfig.yml

@@ -32,19 +32,16 @@ spec:
     type: Docker
     dockerStrategy:
       noCache: false
-      # from:
-      #   kind: ImageStreamTag
-      #   name: fedora:38
+      from:
+        kind: ImageStreamTag
+        name: fedora:38
   output:
     to:
       kind: ImageStreamTag
       name: maubot:latest
   triggers:
-  - type: ConfigChange
-  - type: ImageChange
-  - type: GitHub
-    github:
-      secret: "{{ (env == 'production')|ternary(maubot_prod_github_secret, maubot_stg_github_secret) }}"
-  - type: Generic
-    generic:
-      secret: "{{ (env == 'production')|ternary(maubot_prod_github_secret, maubot_stg_github_secret) }}"
+    - type: ConfigChange
+    - type: ImageChange
+    - type: Generic
+      generic:
+        secret: "{{ (env == 'production')|ternary(maubot_prod_github_secret, maubot_stg_github_secret) }}"