php occ files:scan –help

Description:
  rescan filesystem

Usage:
  files:scan [options] [--] [<user_id>...]

Arguments:
  user_id                will rescan all files of the given user(s)

Options:
      --output[=OUTPUT]  Output format (plain, json or json_pretty, default is plain) [default: "plain"]
  -p, --path=PATH        limit rescan to this path, eg. --path="/alice/files/Music", the user_id is determined by the path and the user_id parameter and --all are ignored
      --all              will rescan all files of all known users
      --unscanned        only scan files which are marked as not fully scanned
      --shallow          do not scan folders recursively
      --home-only        only scan the home storage, ignoring any mounted external storage or share
  -h, --help             Display this help message
  -q, --quiet            Do not output any message
  -V, --version          Display this application version
      --ansi             Force ANSI output
      --no-ansi          Disable ANSI output
  -n, --no-interaction   Do not ask any interactive question
      --no-warnings      Skip global warnings, show command output only
  -v|vv|vvv, --verbose   Increase the verbosity of messages: 1 for normal output, 2 for more verbose output and 3 for debug

Scan All User

docker exec -it --user www-data nextcloud php occ files:scan --all [--quiet]

List User

docker exec -it --user www-data nextcloud php occ user:list

Scan User

docker exec -it --user www-data nextcloud php occ files:scan User