feat(deploy): Schedule on node with db

manifests/deployment.yaml

@@ -13,6 +13,17 @@ spec:
             labels:
                 app: mastodon
         spec:
+            affinity:
+              podAntiAffinity:
+                preferredDuringSchedulingIgnoredDuringExecution:
+                  - labelSelector:
+                      matchExpressions:
+                        - key: cnpg.io/cluster
+                          operator: In
+                          values:
+                            - mastodon-db
+                    topologyKey: "kubernetes.io/hostname"
+                    weight: 100
             securityContext:
                 runAsUser: 991
                 runAsGroup: 991