added Kubernetes support

kubernetes/plausible-mail.yaml

@@ -0,0 +1,70 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: plausible-smtp
+  labels:
+    app.kubernetes.io/name: smtp
+    app.kubernetes.io/component: email
+    app.kubernetes.io/part-of: plausible
+spec:
+  type: ClusterIP
+  ports:
+    - name: smtp
+      port: 25
+      targetPort: 25
+      protocol: TCP
+  selector:
+    app.kubernetes.io/name: smtp
+    app.kubernetes.io/component: database
+    app.kubernetes.io/part-of: plausible
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: plausible-smtp
+  labels:
+    app.kubernetes.io/name: smtp
+    app.kubernetes.io/component: email
+    app.kubernetes.io/part-of: plausible
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: smtp
+      app.kubernetes.io/component: email
+      app.kubernetes.io/part-of: plausible
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: smtp
+        app.kubernetes.io/component: email
+        app.kubernetes.io/part-of: plausible
+    spec:
+      restartPolicy: Always
+      containers:
+        - name: plausible-smtp
+          image: bytemark/smtp:latest
+          imagePullPolicy: Always
+          ports:
+            - containerPort: 25
+          securityContext:
+            allowPrivilegeEscalation: false
+          resources:
+            limits:
+              memory: 512Mi
+              cpu: 500m
+            requests:
+              memory: 5Mi
+              cpu: 100m
+          readinessProbe:
+            tcpSocket:
+              port: 25
+            initialDelaySeconds: 20
+            failureThreshold: 6
+            periodSeconds: 10
+          livenessProbe:
+            tcpSocket:
+              port: 25
+            initialDelaySeconds: 30
+            failureThreshold: 3
+            periodSeconds: 10