Init command with custom port

[白宦成]

Is your feature request related to a problem? Please describe

Yes, If i run nginx local, i can't init answer with default config

Describe the solution you'd like

user can init answer with custom prompt (not just data dir)

Describe alternatives you've considered

• add new flag for custom port
• add feature only init file. don't try to start answer, let people change config ,and the start by manual.
• add feature to load a full config file.

[calmdev]

You could use something like yq to change it to an alternate port:

yq -i '.server.http.addr="0.0.0.0:3200"' ./answer-data/conf/config.yaml

Then start answer:

./answer run -C ./answer-data/

[LinkinStars]

@bestony At answer init, you can use environment variables to specify arguments directly. FYI: https://answer.apache.org/docs/env