Cannot push container to registry from Pull Request by external developer

[termoshtt]

https://github.com/termoshtt/ocipkg/runs/8055319594?check_suite_focus=true in #70

Run cd examples/static/rust/lib
   Compiling ocipkg-static-rust v0.1.0 (/home/runner/work/ocipkg/ocipkg/examples/static/rust/lib)
    Finished release [optimized] target(s) in 0.76s
    Creating oci-archive (/home/runner/work/ocipkg/ocipkg/examples/static/rust/lib/target/release/ocipkg_89cb16368199808a.tar)
     Publish container (ghcr.io/termoshtt/ocipkg/static/rust:f787a2b)
Error: RegistryError(ErrorResponse { errors: [ErrorInfo { code: Denied, message: Some("installation not allowed to Write organization package"), detail: None }] })

This should be skipped.