I need help Mariadb Galera Cluster Docker

HELP ME PLZ… NOT FOUND ,

two docker files for two virtualbox with docker
https://imgur.com/a/Mh0XjSd
two galera.cnf for two virtualbox
https://imgur.com/a/HudlzrA

i run : docker run -d —network host -v db:/var/lib/mysql —name galera1 my-imagen , but kill mariadb in galera2

Complement https://github.com/RicardoToledoB/mariadb-rsync-galera-docker HELP