Dockerfile

# Built for DSRI - optimized Ubuntu VNC lxde-core image: ubuntu:22.04
# Based on original work from https://github.com/vemonet/docker-ubuntu-vnc-desktop/
################################################################################
# base system
################################################################################

ARG BASE_IMAGE=ubuntu:22.04

FROM $BASE_IMAGE AS system


RUN sed -i 's#http://archive.ubuntu.com/ubuntu/#mirror://mirrors.ubuntu.com/mirrors.txt#' /etc/apt/sources.list;


# built-in packages
ENV DEBIAN_FRONTEND=noninteractive
RUN apt update \
    && apt install -y --no-install-recommends software-properties-common curl apache2-utils \
    && apt update \
    && apt install -y --no-install-recommends --allow-unauthenticated \
        supervisor nginx sudo net-tools zenity xz-utils \
        dbus-x11 x11-utils alsa-utils \
        mesa-utils libgl1-mesa-dri \
    && apt autoclean -y \
    && apt autoremove -y \
    && rm -rf /var/lib/apt/lists/*

#Remove snap
### Prevent Snap from ever being installed (APT Pinning)
RUN echo 'Package: snapd\nPin: release a=*\nPin-Priority: -10' > /etc/apt/preferences.d/nosnap && \
    apt-get update && \
    apt-get purge -y snapd || true && \
    apt-get autoremove -y

#Firefox    
###Install GPG and Add Mozilla PPA
RUN apt-get update && apt-get install -y --no-install-recommends \
    gnupg2 \
    software-properties-common \
    && add-apt-repository -y ppa:mozillateam/ppa \
###Set Pinning: Tell Ubuntu to prefer the PPA version over the Snap version
    && echo 'Package: *' > /etc/apt/preferences.d/mozilla-firefox \
    && echo 'Pin: release o=LP-PPA-mozillateam' >> /etc/apt/preferences.d/mozilla-firefox \
    && echo 'Pin-Priority: 1001' >> /etc/apt/preferences.d/mozilla-firefox \
###Install the actual Firefox binary
    && apt-get update \
    && apt-get install -y --no-install-recommends firefox \
    && apt-get clean && rm -rf /var/lib/apt/lists/*

# VNC and basic tools
RUN apt update \
    && apt install -y --no-install-recommends --allow-unauthenticated \
        xvfb x11vnc python3-websockify \
        vim-tiny fonts-ubuntu fonts-wqy-zenhei \
    && apt autoclean -y \
    && apt autoremove -y \
    && rm -rf /var/lib/apt/lists/*

# Desktop environemnt (lxde-core)
RUN apt update \
    && apt install -y --no-install-recommends --allow-unauthenticated \
        lxde-core lxterminal  gtk2-engines-pixbuf gtk2-engines-murrine arc-theme \
    && apt autoclean -y \
    && apt autoremove -y \
    && rm -rf /var/lib/apt/lists/*

# tini to fix subreap
ARG TINI_VERSION=v0.19.0
ADD https://github.com/krallin/tini/releases/download/${TINI_VERSION}/tini /bin/tini
RUN chmod +x /bin/tini


# python library for web backend 
COPY rootfs/usr/local/lib/web/backend/requirements.txt /tmp/
RUN apt-get update \
    && dpkg-query -W -f='${Package}\n' > /tmp/a.txt \
    && apt-get install -y python3-pip python3-dev build-essential \
	&& pip3 install setuptools wheel \
    && pip3 install -r /tmp/requirements.txt \
    && ln -s /usr/bin/python3 /usr/local/bin/python \
    && dpkg-query -W -f='${Package}\n' > /tmp/b.txt \
    && apt-get remove -y `diff --changed-group-format='%>' --unchanged-group-format='' /tmp/a.txt /tmp/b.txt | xargs` \
    && apt-get autoclean -y \
    && apt-get autoremove -y \
    && rm -rf /var/lib/apt/lists/* \
    && rm -rf /var/cache/apt/* /tmp/a.txt /tmp/b.txt


################################################################################
# builder
################################################################################
FROM $BASE_IMAGE AS builder

RUN sed -i 's#http://archive.ubuntu.com/ubuntu/#mirror://mirrors.ubuntu.com/mirrors.txt#' /etc/apt/sources.list;

RUN apt-get update \
    && apt-get install -y --no-install-recommends curl ca-certificates gnupg patch

# nodejs 
RUN curl -fsSL https://deb.nodesource.com/setup_16.x | bash - \
    && apt-get install -y nodejs

# yarn
RUN curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | gpg --dearmor -o /usr/share/keyrings/yarn-archive-keyring.gpg \
    && echo "deb [signed-by=/usr/share/keyrings/yarn-archive-keyring.gpg] https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list \
    && apt-get update \
    && apt-get install -y yarn

# build frontend
COPY web /src/web
RUN cd /src/web \
    && yarn \
    && yarn build

################################################################################
# merge
################################################################################
FROM system
LABEL maintainer="Maastricht University - RCS "

COPY --from=builder /src/web/dist/ /usr/local/lib/web/frontend/
COPY rootfs /

EXPOSE 80
WORKDIR /root

# Create the folder where DSRI storage will be mounted
RUN mkdir -p /root/persistent

ENV HOME=/home/ubuntu \
    SHELL=/bin/bash
HEALTHCHECK --interval=30s --timeout=5s CMD curl --fail http://127.0.0.1:6079/api/health
RUN chmod +x /startup.sh
ENTRYPOINT ["/startup.sh"]