Docker
Docker rootless mode could not publish a privileged port
cannot expose privileged port 80
Rootless Docker could not bind a host port below 1024 because privileged ports require extra kernel or capability configuration in rootless mode.
Error AtlasError Documentation and ResolutionObserved message
cannot expose privileged port 80
Why it happens
- The container is trying to publish a host port below 1024 in rootless mode.
- The system has not been configured to allow privileged port exposure from rootless Docker.
How to fix it
- Use a higher host port such as 8080 instead of 80.
- If required, configure the host to allow privileged ports for rootless networking as documented by Docker.
Official reference
Docker Docs: Rootless troubleshootingRelated errors
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