Add monthly cron to run Cover Server Archival

[mekarpeles]

Related to #6822 and #7691

Proposed Recipe

For now, until there's a fully automatic cron and the code is robust enough to be run stand-alone without oversight, here is a way for us to catch-up on our backlog of non-archived covers:

ssh -A ol-covers0
cd /opt/openlibrary

CONTAINER=$(docker ps | grep -oP 'openlibrary_covers_run_\S+')
if [ -z "$CONTAINER" ]; then
    COMPOSE_FILE="compose.yaml:compose.production.yaml" HOSTNAME=$HOSTNAME docker compose run --rm -d covers bash
fi

CONTAINER=$(docker ps | grep -oP 'openlibrary_covers_run_\S+')
# Will reattach to an existing session else create a new one
# Container will start bash, run python, & return to bash on exit
docker exec -it $CONTAINER screen -DR python bash -c 'python && bash'

from openlibrary.coverstore import config
from openlibrary.coverstore.server import load_config
load_config("/olsystem/etc/openlibrary.yml")
load_config("/olsystem/etc/coverstore.yml")
from openlibrary.coverstore import archive
archive.archive()
archive.Batch.process_pending(upload=True, finalize=True, test=False)

Longer-term

We likely want one cron that performs archival, e.g.

from openlibrary.coverstore import config
from openlibrary.coverstore.server import load_config
load_config("/olsystem/etc/openlibrary.yml")
load_config("/olsystem/etc/coverstore.yml")
from openlibrary.coverstore import archive
archive.archive()

And then another cron which runs upload + cleanup (i.e. "finalize")

archive.Batch.process_pending(upload=True, finalize=True, test=False)