Apache permission denied when binding to address

Describe your Issue

Nextcloud doesn't start because of apache not being able to bind to port 80. I tried to set the sysctls option, I tried runAsNonRoot false, changing the containerPort to a non privileged port, but nothing works.
I'm using a traefik reverse proxy as an ingress controller which is confgured correctly(it is used for all our production stacks).

Logs and Errors

| Initializing nextcloud 30.0.6.2 ...                                                                                                                                                                                                             │
│ New nextcloud instance                                                                                                                                                                                                                          │
│ Installing with PostgreSQL database                                                                                                                                                                                                             │
│ => Searching for scripts (*.sh) to run, located in the folder: /docker-entrypoint-hooks.d/pre-installation                                                                                                                                      │
│ Starting nextcloud installation                                                                                                                                                                                                                 │
│ Nextcloud was successfully installed                                                                                                                                                                                                            │
│ Setting trusted domains…                                                                                                                                                                                                                        │
│ System config value trusted_domains => 1 set to string xxxxxxxxxxxxxxx                                                                                                                                                                   │
│ => Searching for scripts (*.sh) to run, located in the folder: /docker-entrypoint-hooks.d/post-installation                                                                                                                                     │
│ Initializing finished                                                                                                                                                                                                                           │
│ => Searching for scripts (*.sh) to run, located in the folder: /docker-entrypoint-hooks.d/before-starting                                                                                                                                       │
│ AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 10.11.19.106. Set the 'ServerName' directive globally to suppress this message                                                                   │
│ (13)Permission denied: AH00072: make_sock: could not bind to address [::]:80                                                                                                                                                                    │
│ (13)Permission denied: AH00072: make_sock: could not bind to address 0.0.0.0:80                                                                                                                                                                 │
│ no listening sockets available, shutting down                                                                                                                                                                                                   │
│ AH00015: Unable to open logs

Describe your Environment

• Kubernetes distribution: eks

• Helm Version (or App that manages helm): helm v3.16.2

• Helm Chart Version: 6.6.9

• values.yaml:

image:
  pullPolicy: Always

phpClientHttpsFix:
  enabled: false
  protocol: https

nextcloud:
  host: xxxxxxxxxxxxxxxx
  username: admin
  password: xxxxxxxxxxxxxx
  containerPort: 80
  datadir: /var/www/html/data
  securityContext:
    runAsUser: 50002
    runAsNonRoot: true
    sysctls:
      - name: net.ipv4.ip_unprivileged_port_start
        value: "0"

  objectStore:
    s3:
      enabled: true
      accessKey: "xxxxxxxxx"
      secretKey: "xxxxxxx"
      ssl: true
      port: "443"
      region: "xxxxxxxxxxxxx"
      bucket: "xxxxxxxxxxx"

  # Extra config files created in /var/www/html/config/
  # ref: https://docs.nextcloud.com/server/latest/admin_manual/configuration_server/config_sample_php_parameters.html#multiple-config-php-file
  configs: {}
  # For example, to enable image and text file previews:
  #  previews.config.php: |-
  #    <?php
  #    $CONFIG = array (
  #      'enable_previews' => true,
  #      'enabledPreviewProviders' => array (
  #        'OC\Preview\Movie',
  #      ),
  #    );

internalDatabase:
  enabled: false

externalDatabase:
  enabled: true
  type: postgresql
  host: "aurora1.xxxxxxxxx.com"
  user: xxxxxxxx
  password: "xxxxxx"
  database: xxxxxx

persistence:
  enabled: true
  storageClass: "efs-sc"
  accessMode: ReadWriteOnce
  size: 8Gi

livenessProbe:
  enabled: false
  initialDelaySeconds: 120
  periodSeconds: 10
  timeoutSeconds: 5
  failureThreshold: 3
  successThreshold: 1
readinessProbe:
  enabled: false
  initialDelaySeconds: 120
  periodSeconds: 10
  timeoutSeconds: 5
  failureThreshold: 3
  successThreshold: 1
startupProbe:
  enabled: false
  initialDelaySeconds: 120
  periodSeconds: 10
  timeoutSeconds: 5
  failureThreshold: 30
  successThreshold: 1

Additional context, if any

We're using NFS for persistance using AWS EFS, it works fine. We're using Aurora PostgreSQL as a database, it works fine too. I turned off the probes temporarily because the initialization lasts for 5-10 minutes.
I've set runAsUser: 50002 because that was the only way to make storage permissions work.

Begin with the supplied values.yaml, especially nextcloud.securityContext, containerPort, and the Kubernetes deployment generated by the Helm chart. Reproduce the Apache startup failure in EKS and trace the rendered security settings; done means the chart starts successfully while retaining the reported non-root storage configuration.