Use variable susbtitution in manifests

infrastructure/configs/cert-manager/certificate.yaml

@@ -7,8 +7,8 @@ metadata:
 spec:
   secretName: wildcard-nmsny-dev-tls
   dnsNames:
-    - "example.com"
-    - "*.example.com"
+    - "${DOMAIN}"
+    - "*.{DOMAIN}"
   issuerRef:
     name: cloudflare-prod
     kind: ClusterIssuer

infrastructure/configs/cert-manager/issuer.yaml

@@ -5,7 +5,7 @@ metadata:
   name: cloudflare-prod
 spec:
   acme:
-    email: admin@example.com
+    email: ${LETSENCRYPT_EMAIL}
     server: https://acme-v02.api.letsencrypt.org/directory
     privateKeySecretRef:
       name: cloudflare-prod-issuer-account-key 

infrastructure/controllers/traefik/values.yaml

@@ -5,7 +5,7 @@ logs:
 ingressRoute:
   dashboard:
     enabled: true
-    matchRule: Host(`traefik.example.com`)
+    matchRule: Host(`${TRAEFIK_DOMAIN}`)
     entryPoints: ["websecure"]
     middlewares:
       - name: "auth-authelia@kubernetescrd"