Dockerfile-minimalist

# syntax=docker/dockerfile:1.5
# "as builder" lets us squash the layers and reduce the image size later.
FROM ubuntu:22.04 as builder    

ENV DEBIAN_FRONTEND=noninteractive TERM=xterm-256color MEMORY=4096 CPU=4 DISK_SIZE=50

RUN echo "do some Setting Up" && \
    apt-get update &&  \
    apt-get -y full-upgrade &&  \
	echo "Do basic install without any recommended packages, we don't need them wasting space." && \
    apt-get install -y --no-install-recommends \
    nano \
    build-essential \
    libguestfs-tools \
    openssh-server \
    curl \
    net-tools \
    gettext-base \
    jq && \
	echo "Install the next packages with recommends,as they appear to be necessary for Vagrant." && \
    apt-get install -y \
    libvirt-dev \
    qemu-kvm \
    libvirt-daemon-system && \
	echo "Do some cleanup." && \ 
    apt-get autoremove -y && \
    apt-get clean && \
    echo "Download and install Vagrant.  Installing Vagrant from repo is not advised as the WinRM library is not shipped with Vagrant installed via repos." && \ 
	rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* && \
    curl -O https://releases.hashicorp.com/vagrant/$(curl -s https://checkpoint-api.hashicorp.com/v1/check/vagrant  | jq -r -M '.current_version')/vagrant_$(curl -s https://checkpoint-api.hashicorp.com/v1/check/vagrant  | jq -r -M '.current_version')-1_amd64.deb && \
    dpkg -i vagrant_$(curl -s https://checkpoint-api.hashicorp.com/v1/check/vagrant  | jq -r -M '.current_version')-1_amd64.deb && \
    rm      vagrant_$(curl -s https://checkpoint-api.hashicorp.com/v1/check/vagrant  | jq -r -M '.current_version')-1_amd64.deb && \
    echo "Install Vagrant-libvirt vagrant plugin." && \
	vagrant plugin install vagrant-libvirt && \
    echo "prepare a folder for our vagrant box context to reside in. If we add persistence, this is the folder that gets exposed to the vagrant box by default." && \
	mkdir /vagrant
	
#  copy the startup.sh script so that something will happen if you run this image, and you should not get any errors.
COPY --chmod=755 startup.sh-minimalist startup.sh

#  compress the multiple layers that make up this image into a single layer, making the image as small as possible.
from scratch
ENV DEBIAN_FRONTEND=noninteractive TERM=xterm-256color MEMORY=4096 CPU=4 DISK_SIZE=50
COPY --from=builder / /
ENTRYPOINT ["/startup.sh"]