fix: can't access webpack port when dev using docker

Created by: loheagn

What type of PR is this?

/kind bug

What this PR does / why we need it:

Fixed an issue that the front-end could not be accessed normally because the docker container did not expose the port listened by webpack when developing with docker.

Which issue(s) this PR fixes:

Fixes #

Special notes for reviewers:

Does this PR introduced a user-facing change?

None

Additional documentation, usage docs, etc.: