definieren apt Fragen innerhalb des Dockerfile

Question

ich eine Dockerfile zu erstellen bin versucht Postfix zu installieren, aber die Installation stellt diese Frage:

Please select the mail server configuration type that best meets your needs. 

No configuration: 
    Should be chosen to leave the current configuration unchanged. 
Internet site: 
    Mail is sent and received directly using SMTP. 
Internet with smarthost: 
    Mail is received directly using SMTP or by running a utility such 
    as fetchmail. Outgoing mail is sent using a smarthost. 
Satellite system: 
    All mail is sent to another machine, called a 'smarthost', for delivery. 
Local only: 
    The only delivered mail is the mail for local users. There is no network. 

    1. No configuration 3. Internet with smarthost 5. Local only 
    2. Internet Site  4. Satellite system 

Die Dockerfile

FROM ubuntu:xenial 

MAINTAINER xxx 

RUN apt-get update \ 
&& apt-get install -y postfix postfix-mysql dovecot-core dovecot-imapd dovecot-lmtpd dovecot-mysql mariadb-server\ 
&& apt-get clean 

Wie kann ich Antworten auf die zur Verfügung stellen Installation von Postfix nicht interaktiv?

Answer 1

Try RUN Anweisung in Sie Dockerfile zu ändern:

RUN apt-get update\ 
&& DEBIAN_FRONTEND=noninteractive apt-get install -y postfix postfix-mysql dovecot-core dovecot-imapd dovecot-lmtpd dovecot-mysql mariadb-server\ 
&& apt-get clean 

Oder bessere Lösung sein kann:

diese Anweisung hinzufügen in Ihnen ARG DEBIAN_FRONTEND=noninteractive Dockerfile (es ist nur während des Build verfügbar).