Merge branch 'traefik-v2' into 'master'

acme-copy-certs/.gitignore

acme-copy-certs/Dockerfile

acme-copy-certs/README.md

acme-copy-certs/app/cert_updater.py

acme-copy-certs/app/docker_actions.py

acme-copy-certs/app/docker_monitor.py

acme-copy-certs/app/file_watcher.py

acme-copy-certs/app/service_manager.py

acme-copy-certs/requirements.txt

acme-copy-certs/tests/test.py

doc/guide_bonnes_pratiques.md

doc/update_and_test.md

pica-db-backup/docker-compose.yml

pica-dokuwiki/Dockerfile

pica-dokuwiki/docker-compose.yml

pica-etherpad/docker-compose.yml

pica-grafana-prom/docker-compose.yml

pica-graphbot/config.json

pica-lufi/docker-compose.yml

pica-mail/docker-compose.yml