=== C1: values가 pod-level securityContext를 노출하는가 ===
  # Define the security context for the pod.
  # If unset, this will be automatically set to the minimum privileges required to bind to port 80 and 443.
  # On Kubernetes 1.22+, this only requires the `net.ipv4.ip_unprivileged_port_start` sysctl.
  securityContext: {}
  containerSecurityContext: {}
=== C2: 미설정 시 ip_unprivileged_port_start=0 자동 주입 ===
      securityContext:
        # Safe since 1.22: https://github.com/kubernetes/kubernetes/pull/103326
        sysctls:
        - name: net.ipv4.ip_unprivileged_port_start
          value: "0"
      containers:
=== C3: values 지정 시 자동 기본이 통째 대체되는가 (merge 아님) ===
      securityContext:
        sysctls:
        - name: net.ipv4.tcp_tw_reuse
          value: "1"
      containers: