Galmon auto-update in docker

update-galmon.sh

#!/bin/bash

git_tmp_dir=$(mktemp -d /tmp/galmon-XXXXX)

git clone --recursive https://github.com/ahupowerdns/galmon.git "${git_tmp_dir}"

cd "${git_tmp_dir}"

running_ver=$(sudo docker exec -it galmon cat githash.h | grep -Eo 'GIT_HASH "[a-z0-9]+"' | cut -d ' ' -f 2 | tr -d '"')
upstream_ver=$(git describe --always --dirty=+ | tr -d '\n')

if [ ! -z "${upstream_ver}" ]; then
        if [ "${running_ver}" == "${upstream_ver}" ]; then
                echo "No newer version available, not updating"
        else
                sudo docker build --pull --no-cache -t galmon --build-arg MAKE_FLAGS=-j1 .
                sudo docker stop galmon && sudo docker rm galmon
                sudo docker run -d --restart=always --device=/dev/ttyACM0 --name=galmon galmon /galmon/ubxtool --wait --port /dev/ttyACM0 --gps --galileo --glonass
                sudo docker system prune --force
        fi
fi

rm -rf "${git_tmp_dir}"