Test with kube-linter

deployment.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: test-ms
    release: 2.0.2
  name: test-ms
  namespace: test
spec:
  replicas: 1
  revisionHistoryLimit: 10
  selector:
    matchLabels:
      app: test-ms
      release: 2.0.2
  strategy:
    rollingUpdate:
      maxSurge: 1
      maxUnavailable: 0
    type: RollingUpdate
  template:
    metadata:
      creationTimestamp: null
      labels:
        app: test-ms
        release: 2.0.2
    spec:
      imagePullSecrets:
        - name: regcred
      containers:
      - image: test-ms:1.0.0
        envFrom:
        - configMapRef: 
              name: test-ms-map
        - secretRef:
              name: test-envvar-secret
        env:      
        - name: SMTP_PASSWORD
          valueFrom:
            secretKeyRef:
              name: test-ms-smtp-secret
              key: password 
        imagePullPolicy: IfNotPresent
        livenessProbe:
          failureThreshold: 6
          httpGet:
              path: /test
              port: 8080
              scheme: HTTP
          initialDelaySeconds: 30
          periodSeconds: 10
          successThreshold: 1
          timeoutSeconds: 5
        name: test-ms
        ports:
        - containerPort: 8080
          name: http
          protocol: TCP
        - containerPort: 443
          name: https
          protocol: TCP
        readinessProbe:
          failureThreshold: 3
          httpGet:
              path: /test
              port: 8080
              scheme: HTTP
          initialDelaySeconds: 5
          periodSeconds: 5
          successThreshold: 1
          timeoutSeconds: 3
        volumeMounts:
        - mountPath: /app/test-key/key.der
          name: test-key    
          subPath: key.der
        resources: {}
        terminationMessagePath: /dev/log
        terminationMessagePolicy: File
      dnsPolicy: ClusterFirst
      hostAliases:
      - hostnames:
        - status.localhost
        ip: 127.0.0.1
      restartPolicy: Always
      schedulerName: default-scheduler
      securityContext: {}
      terminationGracePeriodSeconds: 30