Add Docuseal e-signature service at sign.neuralplatform.ai

- k8s manifests: Deployment, Service, PVC, Ingress, ExternalSecret
- Argo CD app watching servers/legion/k8s/docuseal
- CF tunnel ingress rule for sign.neuralplatform.ai
- Vault secret at secret/docuseal (secret_key_base seeded)

servers/legion/k8s/docuseal/ingress.yaml

@@ -0,0 +1,25 @@
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: docuseal
+  namespace: docuseal
+  annotations:
+    traefik.ingress.kubernetes.io/router.entrypoints: websecure
+    cert-manager.io/cluster-issuer: letsencrypt-prod
+spec:
+  ingressClassName: traefik
+  tls:
+    - hosts:
+        - sign.neuralplatform.ai
+      secretName: docuseal-tls
+  rules:
+    - host: sign.neuralplatform.ai
+      http:
+        paths:
+          - path: /
+            pathType: Prefix
+            backend:
+              service:
+                name: docuseal
+                port:
+                  number: 3000