build -f with relative path fails with "no locale in path"

[caugner]

What information was incorrect, unhelpful, or incomplete?

I tried to run this command:

% cargo run -- build --no-basic --json-issues --data-issues -f ../content/files/en-us/web/http/headers/x-frame-options/index.md 
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.18s
     Running `target/debug/rari build --no-basic --json-issues --data-issues -f ../content/files/en-us/web/http/headers/x-frame-options/index.md`
Building everything 🛠️
ERROR rari_doc::reader: no locale in path
Took:    5.906ms for reading 0 docs
Took:  533.708µs to build content docs (0)

What did you expect to see?

I expected the command to build the file.

Do you have any supporting links, references, or citations?

No response

Do you have anything more you want to share?

No response