In-cluster Docker registry AKS bug

example-docker-registry.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: docker-registry
  namespace: docker-registry
  labels:
    app: docker-registry
spec:
  replicas: 1
  selector:
    matchLabels:
      app: docker-registry
  template:
    metadata:
      labels:
        app: docker-registry
    spec:
      volumes:
        - name: registry-data
          persistentVolumeClaim:
            claimName: registry-data
        - name: registry-secret-data
          secret:
            secretName: docker-registry-basic-auth-secret
      containers:
        - name: registry
          image: registry:2
          imagePullPolicy: Always
          env:
            - name: REGISTRY_AUTH
              value: htpasswd
            - name: REGISTRY_HTTP_ADDR
              value: 0.0.0.0:5000
            # Secret was generated with:
            # docker run --rm --entrypoint htpasswd registry:2 -Bbn foo bar > auth
            # kubectl create secret generic docker-registry-basic-auth-secret --from-file=auth --namespace=docker-registry
            - name: REGISTRY_AUTH_HTPASSWD_PATH
              value: "/docker-registry-auth/auth"
            - name: REGISTRY_AUTH_HTPASSWD_REALM
              value: basic-realm
          ports:
            - name: http
              containerPort: 5000
          volumeMounts:
            - name: registry-data
              mountPath: /var/lib/registry
            - name: registry-secret-data
              mountPath: "/docker-registry-auth/"
              readOnly: true

---
kind: Service
apiVersion: v1
metadata:
  name: docker-registry
  namespace: docker-registry
spec:
  selector:
    app: docker-registry
  ports:
    - protocol: TCP
      port: 80
      targetPort: 5000
---
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: docker-registry
  namespace: docker-registry
  annotations:
    nginx.ingress.kubernetes.io/proxy-body-size: "0"
spec:
  tls:
    - hosts:
        - my-registry.my-site.com
      secretName: docker-registry-tls
  rules:
    - host: my-registry.my-site.com
      http:
        paths:
          - backend:
              serviceName: docker-registry
              servicePort: 80