add ingress config

k8s/ingress.yaml

+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  namespace: kszk-kepzes-site
+  annotations:
+    cert-manager.io/cluster-issuer: letsencrypt
+    kubernetes.io/tls-acme: "true"
+  name: kszkepzes-frontend
+spec:
+  rules:
+    - host: "ujonc.kszk.bme.hu"
+      http:
+        paths:
+          - path: /
+            pathType: Prefix
+            backend:
+              service:
+                name: kszkepzes-frontend
+                port:
+                  number: 3000
+  tls:
+    - hosts:
+        - "ujonc.kszk.bme.hu"
+      secretName: kszkepzes-cert
\ No newline at end of file