add nginx ingress controller

infra/nginx/Makefile

@@ -0,0 +1,4 @@
+install:
+	helm repo add nginx https://helm.nginx.com/stable
+	helm repo update nginx
+	helm upgrade --install -n nginx-ingress-controller --create-namespace nginx-ingress nginx/nginx-ingress --version 2.0.1 -f values.yaml

infra/nginx/values.yaml

@@ -0,0 +1,18 @@
+controller:
+  resources:
+    requests:
+      cpu: 100m
+      memory: 128Mi
+    limits:
+      cpu: 100m
+      memory: 128Mi
+
+  ingressClass:
+    create: true
+    setAsDefaultIngress: true
+
+  service:
+    create: true
+    type: LoadBalancer
+    externalTrafficPolicy: Local
+    ipFamilyPolicy: RequireDualStack