konstruktoid/ubuntubuild repository overview

= Debian and Ubuntu base image generator

If you're not using Docker, run sudo sh buildeb.sh to generate a Debian or Ubuntu base image on a Ubuntu or Debian host. + It will use debootstrap, create a tar-file, generate the Dockerfile and add a SHA256 checksum of the created tar-file to a ENV in the Dockerfile. + buildeb.sh will also add .git and any previously generated tar-files to .dockerignore.

== Build and verify sudo sh buildeb.sh <release> <mirror> <directory> +

For example:

$ sudo sh buildeb.sh focal http://archive.ubuntu.com/ubuntu "$(pwd)/buildarea"
$ docker build -t konstruktoid/ubuntu -f Dockerfile.focal .
$ docker run -t -i konstruktoid/ubuntu /bin/bash

== Using Docker

docker build --no-cache -t konstruktoid/ubuntubuild -f Dockerfile .
docker run --privileged -v "$(pwd)":/opt/buildarea konstruktoid/ubuntubuild focal http://archive.ubuntu.com/ubuntu

== Autobuild

docker run --privileged -v "$(pwd)":/opt/buildarea konstruktoid/ubuntubuild focal http://archive.ubuntu.com/ubuntu

== Recommended reading https://securityblog.redhat.com/2014/12/18/before-you-initiate-a-docker-pull/[Before⁠ you initiate a “docker pull”] + https://github.com/konstruktoid/Docker/blob/master/Security/CheatSheet.adoc[Docker⁠ Security Cheat Sheet] + http://www.infoq.com/news/2015/05/Docker-Image-Vulnerabilities[Security⁠ Vulnerabilities in Docker Hub Images] + https://joeyh.name/blog/entry/docker_run_debian/[what⁠ does docker.io run -it debian sh run?]