nginx logs (rsyslog) not going through vector.dev

Question

I've got the nginx access_log set up to syslog. The syslog in docker is rsyslog docker appliance alpine (https://hub.docker.com/r/rsyslog/syslog_appliance_alpine). From rsyslog docker, I could see the nginx logs poured in rsyslog completely.

Whereas vector.dev

[sources.syslog]
  type = "syslog"
  address = "127.0.0.1:514"
  mode = "udp"

[sinks.console]
  type = "console"
  inputs = ["syslog"]
  encoding.codec = "text"

• The sources.syslog seems not working
• Thereby I tried to pose a console sink whose inputs = "syslog" (as sources). But no log was printed out at all but kept on listening

2024-03-08 13:28:51 2024-03-08T13:28:51.436689Z  INFO source{component_kind="source" component_id=syslog component_type=syslog}: vector::sources::syslog: Listening. addr=127.0.0.1:514 type="udp"

My question is:

• Is there anything going wrong on my vector.dev configuration?
• Any alternative way just to let vector.dev embrace syslog's logs under any other manners (e.g socket...)?

Thanks