photoprism-freebsd-port/files/pkg-message.in

[
{ type: install
  message: <<EOM
You must add the following lines to /etc/rc.conf to enable photoprism:
photoprism_enable="YES"
photoprism_assetspath="%%PHOTOPRISM_DATA_DIR%%/assets"
photoprism_storagepath="%%PHOTOPRISM_DATA_DIR%%/storage"

or add a yaml file for options, if you prefer:

photoprism_defaultsyaml="/usr/local/etc/photoprism/options.yml"

For enable the public mode (no password view):

photoprism_auth_mode="public"

Then set an initial password:
photoprism --assets-path=%%PHOTOPRISM_DATA_DIR%%/assets --storage-path=%%PHOTOPRISM_DATA_DIR%%/storage --originals-path=%%PHOTOPRISM_DATA_DIR%%/sto
rage/originals --import-path=%%PHOTOPRISM_DATA_DIR%%/storage/import passwd

EOM
}
]