On my Synolog Nas, a strange logging driver called db was run by default.
How to modify it to a normal json-file?

In Synolog's Nas, his Daemon config file is special, and it is placed in the /var/packages/Docker/etc/ directory.
Called dockerd.json.

1. Enter the editor
vi /var/packages/Docker/etc/dockerd.json
Add "log-driver": "json-file"


2. Restart Docker Daemon
synoservice --restart pkgctl-Docker

3. View the default Logging driver settings
docker info|grep Logging


Fourth, the actual test function
docker-comose logs -f

I can see it normally, there is something...


Supplement: I often use commands on synology
For example, to list all the service names on the Synology NAS.
synoservice --list
To find Docker, you can query in uppercase
synoservice --list|grep Docker
pkgctl-Docker

If you want to overload nginx settings, you can use
synoservice --reload nginx

Use help to view related settings
synoservice --help