Why can’t the following Dockerfile be build? What is the problem?

  docker, question

FROM ubuntu
LABEL Description=”test” Vender=”test” Version=”1.0″
RUN apt-get update && apt-get install -y git gcc g++ tmux apt-utils mysql-client mysql-server

docker build -t test/test .

It’s stuck down here. It’s no use waiting for long. Why is this so?
What is the problem with the Dockerfile above?

Selecting previously unselected package psmisc.
 Preparing to unpack .../psmisc_22.21-2.1build1_amd64.deb   ...
 Unpacking psmisc (22.21-2.1build1)   ...
 Processing triggers for systemd (229-4ubuntu6)   ...
 Processing triggers for libc-bin (2.23-0ubuntu3)   ...
 Setting up mysql-common (5.7.16-0ubuntu0.16.04.1)   ...
 update-alternatives: using /etc/mysql/my.cnf.fallback to provide /etc/mysql/my.cnf (my.cnf) in auto mode
 Selecting previously unselected package mysql-server-5.7.
 (Reading database ... 10999 files and directories currently installed.)
 Preparing to unpack .../mysql-server-5.7_5.7.16-0ubuntu0.16.04.1_amd64.deb   ...
 debconf: unable to initialize frontend: Dialog
 debconf: (TERM is not set, so the dialog frontend is not usable.)
 debconf: falling back to frontend: Readline
 Configuring mysql-server-5.7
 While not mandatory, it is highly recommended that you set a password for the
 MySQL administrative "root" user.
 If this field is left blank, the password will not be changed.
 New password for the MySQL "root" user:

This one needs interaction. It has been waiting for the password to be entered, so it is stuck.
You can refer to this article:http://blog.csdn.net/fickyou/ …