Add a Dockerfile and related files

This builds a Docker container based upon bookworm-slim and starts
the application using Qt's VNC platform plugin.

Change-Id: Ica4437bb73b7c9b73b8e7ade6d2a7b508bb817e9
Signed-off-by: Lisandro Pérez Meyer <lpmeyer@ics.com>

diff --git a/docker/Dockerfile b/docker/Dockerfile
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+++ b/docker/Dockerfile
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+FROM debian:bookworm-slim as base
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+# If you have a running instance of squid-deb-proxy or apt-cacher-ng this will
+# allow you to use it an avoid wasting bandwith every time you create an image.
+ARG httpproxy
+ARG httpsproxy
+ENV http_proxy=$httpproxy
+ENV https_proxy=$httpproxy
+
+COPY install_packages.sh /tmp
+RUN /tmp/install_packages.sh
+COPY set_up_agl-demo-control-panel.sh /tmp
+RUN /tmp/set_up_agl-demo-control-panel.sh
+
+COPY entrypoint.sh /opt
+
+ENV LANG en_US.UTF-8
+ENV LANGUAGE en_US:en
+ENV LC_ALL en_US.UTF-8
+
+# Clean proxy variables.
+ENV http_proxy=
+ENV https_proxy=
+
+# Set the locale
+RUN locale-gen en_US.UTF-8
+ENV LANG en_US.UTF-8
+
+ENTRYPOINT /opt/entrypoint.sh
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diff --git a/docker/README.md b/docker/README.md
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+# Docker container for AGL Demo Control Panel
+
+## Building
+
+In this directory run:
+
+```bash
+$ docker build \
+ --pull -t agl-demo-control-panel .
+```
+Or, if you have an apt cacher like squid-deb-proxy:
+
+```bash
+$ docker build \
+ --build-arg httpproxy="http://<proxy IP>:<proxy port>/" \
+ --build-arg httpsproxy="https://<proxy IP>:<proxy port>/" \
+ --pull -t agl-demo-control-panel .
+```
+
+## Running the container
+
+```bash
+$ docker run -ti --rm --network host agl-demo-control-panel
+```
+
+If you plan to use this frequently do consider adding it as an alias into your ~/.bashrc!
+
+Edit ~/.bashrc and add this line:
+
+```bash
+alias docker_agl-demo-control-panel='docker run -ti --rm --network host agl-demo-control-panel'
+```
+
+Then source ~/.bashrc or log out and in and simply run:
+
+```bash
+$ docker_agl-demo-control-panel
+```

diff --git a/docker/entrypoint.sh b/docker/entrypoint.sh
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+++ b/docker/entrypoint.sh
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+#!/bin/bash
+
+set -x
+
+cd /opt/agl-demo-control-panel
+QT_QPA_PLATFORM="vnc:size=1920x1080" python3 -u main.py
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diff --git a/docker/install_packages.sh b/docker/install_packages.sh
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+++ b/docker/install_packages.sh
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+#!/bin/bash
+
+# Exit as soon as something fails.
+set -e
+
+# The idea behind doing all this in a script is to reduce the final size of the
+# docker image, as all this will only generate one layer.
+
+echo "http_proxy is $http_proxy"
+echo "https_proxy is $https_proxy"
+
+# Keep the dependency list as short as reasonable
+apt-get update
+apt-get install --yes \
+ bash \
+ git \
+ locales
+
+# Install AGL Demo Control Panel dependencies
+apt-get install --yes \
+ python3-pip \
+ python3-pyqt5 \
+ python3-qtpy \
+ pyqt5-dev-tools
+
+# Set bash as default shell
+echo "dash dash/sh boolean false" | debconf-set-selections - && dpkg-reconfigure dash
+
+# Set the locale
+sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen && locale-gen
+
+apt-get --yes clean
+apt-get --yes autoremove

diff --git a/docker/set_up_agl-demo-control-panel.sh b/docker/set_up_agl-demo-control-panel.sh
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+++ b/docker/set_up_agl-demo-control-panel.sh
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+#!/bin/bash
+
+# Disable the package proxy.
+export http_proxy=""
+export https_proxy=""
+
+# Clone AGL Demo Control Panel
+cd /opt
+http_proxy="" https_proxy="" git clone "https://gerrit.automotivelinux.org/gerrit/src/agl-demo-control-panel"
+cd agl-demo-control-panel
+
+# We do not need to install all the requirements.
+cp requirements.txt requirements_small.txt
+sed -i 's/pyqt5/#pyqt5/g' requirements_small.txt
+cat requirements_small.txt
+pip3 install --break-system-packages -r requirements_small.txt
+pyrcc5 assets/res.qrc -o res_rc.py
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