Refresh KPI front-end files without rebuilding them

refresh-front-end-files.sh

#!/bin/bash
# jnm 20210526

set -e

test -e kpi && test -e kobo-install || (
    echo 'This script must be run from the directory where `kpi` and `kobo-install` reside.'
    exit 1
)

echo 'Hello! This script assumes you have recently rebuilt the KPI image'
echo 'using `./run.py -cf build kpi`, `./run.py -bkf`, or similar.'
echo 'Despite doing this, old static files are still being served(!) because'
echo 'the fresh static files inside the newly built Docker image are being'
echo 'shadowed upon container creation by the `../kpi:/srv/src/kpi`'
echo 'volume defined in `kobo-docker/docker-compose.frontend.override.yml`.'
echo
echo 'To make a long story short, this script fixes the problem :D'
echo "If you HAVE NOT yet rebuilt the KPI image, this won't help!"
echo
echo 'Press return to proceed, or CTRL+C to exit.'
read trash

echo 'Looking for KPI images…'
latest_kpi_image=$(kobo-install/run.py -cf images | grep _kpi_ | awk '{print $4}')
echo 'The latest KPI image found is:'
docker images | sed -n "1p;/$latest_kpi_image/p"
echo

echo 'Starting a temporary container using latest KPI image…'
container_id=$(
    docker run --rm --detach "$latest_kpi_image" ping localhost
)

echo 'Copying files generated by `npm run build` from within image to `kpi/jsapp/compiled/`…'
rm -r kpi/jsapp/compiled
docker cp "$container_id:/srv/src/kpi/jsapp/compiled" kpi/jsapp/
docker stop "$container_id" > /dev/null &

echo 'Updating static files served by NGINX…'
echo
kobo-install/run.py -cf run --rm kpi \
    bash -c 'python manage.py collectstatic --noinput && rsync -aq --delete --chown=www-data "${KPI_SRC_DIR}/staticfiles/" "${NGINX_STATIC_DIR}/"' \
2>&1 | sed 's/^/\t/'
echo

kobo-install/run.py -cf ps | grep kpi > /dev/null && (
    echo 'Restarting KPI container…'
    kobo-install/run.py -cf restart kpi
    echo
)

echo 'Waiting for temporary container to stop…'
wait

echo 'Done?!'