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postgresql

13 to 17

docker compose stop
docker compose start db
 
docker compose exec -T db pg_dump -c -U nextcloud nextcloud | xz > dump.sql.xz
docker compose stop db

update compose file 

docker compose up -d db
xzcat dump.sql.xz | docker compose exec -T db psql -U nextcloud

Note: if config.php contains old oc_admin user, change it to nextcloud user and corresponding password.