error invalid config: undefined

[xzy256]

when i start code-server in container, i occur error invalid config: undefined

code-server source code is mounted in container with -v.
print version also error

# /var/vm/vscode/bin/code-server --version
[2020-12-15T04:28:51.050Z] error invalid config: undefined

but print success at hostpath

# ./code-server --version
***** Please use the script in bin/code-server instead!
***** This script will soon be removed!
***** See the release notes at https://github.com/cdr/code-server/releases/tag/v3.4.0
3.7.4 11f53784c58f68e7f4c5b3b8dae9407caa41725b

Only if start code-server at one container, commit this container to new image, then start code-server in this new image, will be occur the error. why?

[xzy256]

the reason that config yaml is empty, remove it, run correctly