permission issue with docker compose up

[zydisney]

nats-1           | nats-server: read /config/gnatsd.conf: is a directory
nats-1           | nats-server: read /config/gnatsd.conf: is a directory
nats-1           | nats-server: read /config/gnatsd.conf: is a directory
spreedbackend-1  | Preparing signaling server configuration in /config/server.conf ...
spreedbackend-1  | cp: can't create '/config/server.conf/server.conf.in': Permission denied
spreedbackend-1  | Preparing signaling server configuration in /config/server.conf ...
spreedbackend-1  | cp: can't create '/config/server.conf/server.conf.in': Permission denied

I got this issue when use sudo docker compose up to start the container. How should I fix it?

[klatka]

1. remove dirs docker/server.conf and docker/gnatsd.conf
2. copy server.conf and gnatsd.conf into docker/

[zydisney]

1. remove dirs docker/server.conf and docker/gnatsd.conf
2. copy server.conf and gnatsd.conf into docker/

I copy server.conf and gnatsd.conf (which are files) to docker/
The new error appears. It seems require gnatsd.conf to be a folder.

Error response from daemon: failed to create task for container: failed to create shim task: 
OCI runtime create failed: runc create failed: unable to start container process: error during container init: 
error mounting "/home/aaron/nextcloud-spreed-signaling/docker/gnatsd.conf" to rootfs at "/config/gnatsd.conf": mount /home/aaron/nextcloud-spreed-signaling/docker/gnatsd.conf:/config/gnatsd.conf (via /proc/self/fd/6), 
flags: 0x5000: not a directory: unknown: Are you trying to mount a directory onto a file (or vice-versa)? 
Check if the specified host path exists and is the expected type

If I don't copy gnatsd.conf to docker/, docker compose up will create a gnatsd.conf dir. After that, error:

nats-1           | nats-server: read /config/gnatsd.conf: is a directory 

[fancycode]

Which OS / version of Docker is this? The steps described by @klatka should work fine, just tested this here myself.