Run

git clone git@github.com:matchish/nextcloud-export-import-example.git
cd nextcloud-export-import-example
docker-compose up -d

Export

Set maintenance mode
docker-compose exec --user www-data app php occ maintenance:mode --on
Copy all files
docker cp --archive $(docker-compose ps -q app):/var/www/html ./backup/
Dump db
docker-compose exec db mysqldump --single-transaction -h localhost -u root -ppassword nextcloud > nextcloud-sqlbkp.bak

Import

Clean up files
docker-compose exec app rm -rf /var/www/html/
Drop and recreate db
docker-compose exec db mysql -h localhost -u root -ppassword -e "DROP DATABASE nextcloud"
docker-compose exec db mysql -h localhost -u root -ppassword -e "CREATE DATABASE nextcloud CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci"
Import db
docker exec -i $(docker-compose ps -q db) mysql -h localhost -u root -ppassword nextcloud < nextcloud-sqlbkp.bak
Restore files
docker cp --archive ./backup/. $(docker-compose ps -q app):/var/www/html/
Fix owner
docker-compose exec app chown -R www-data:www-data /var/www/html
Disable maintenance mode
docker-compose exec --user www-data app php occ maintenance:mode --off
Check restored instance
docker-compose exec --user www-data app php occ maintenance:data-fingerprint