Support binding ports <1024 while running as unprivileged user about unifi HOT 3 CLOSED

[2017-09-22 12:26:36,782] Script version 0.4.6 startup.
[2017-09-22 12:26:36,786] Setting params/variables/paths.
[2017-09-22 12:26:36,792] Validating system.properties setup for container.
[2017-09-22 12:26:36,796] Existing '/usr/lib/unifi/data/system.properties' found. Setting its container-mode options to 'true'.
[2017-09-22 12:26:36,828] SSL certificate file unchanged. Continuing with UniFi startup.
[2017-09-22 12:26:36,832] To force retry the SSL import process: delete '/usr/lib/unifi/cert/unificert.sha256' and restart the container.
[2017-09-22 12:26:36,841] Entrypoint running with UID=0.
[2017-09-22 12:26:36,857] UID/GID for unifi are unchanged: UID=999, GID=999
[2017-09-22 12:26:36,861] Ensuring file permissions are correct before dropping privs - 'chown -R unifi:unifi /usr/lib/unifi'.
[2017-09-22 12:26:36,946] Support binding ports <1024 'setcap 'cap_net_bind_service=+ep' /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java'.
Failed to set capabilities on file `/usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java' (Invalid argument)
The value of the capability argument is not permitted for a file. Or the file is not a regular (non-symlink) file

$> docker info
Containers: 11
Images: 301
Storage Driver: aufs
 Root Dir: /volume1/@docker/aufs
 Backing Filesystem: extfs
 Dirs: 323
 Dirperm1 Supported: true
Execution Driver: native-0.2
Kernel Version: 3.10.35
Operating System: <unknown>
CPUs: 4
Total Memory: 3.859 GiB
Registry: [https://index.docker.io/v1/]
WARNING: No memory limit support
WARNING: No swap limit support

$> docker version
Client version: 1.6.2
Client API version: 1.18
Go version (client): go1.4.2
Git commit (client): a263667
OS/Arch (client): linux/amd64
Server version: 1.6.2
Server API version: 1.18
Go version (server): go1.4.2
Git commit (server): a263667
OS/Arch (server): linux/amd64