Request for improvement of "debconf: delaying package configuration, since apt-utils is not installed" issue when building with docker

[jjhhong]

Describe the bug
Request for improvement of "debconf: delaying package configuration, since apt-utils is not installed" issue when building with docker.
Add the following to your Dockerfile.

Related Links: https://velog.io/@khh180cm/%EB%8F%84%EC%BB%A4-%EB%B9%8C%EB%93%9C-%EC%97%90%EB%9F%AC

RUN apt-get update && apt-get install -y --no-install-recommends
vim
apt-utils
&& rm -rf /var/lib/apt/lists/*

To Reproduce
Steps to reproduce the behavior:

Expected behavior
A clear and concise description of what you expected to happen.

System environment (please complete the following information):

• OS: [e.g. Ubuntu 16.04, Windows, Mac OS]
• Python : [e.g. python3.7]

Additional context
Please add the part to download the fosslight source code from git to the fosslight docker installation guide.

For beginners, unlike pip installation, in the case of docker, it seems that you may not know which file to receive or where to perform it.

0. Please download the fosslight source scanner source code.
   git clone https://github.com/fosslight/fosslight_source_scanner.git