change name

backup.sh

@@ -30,7 +30,7 @@ else
     exit 1
 fi
 
-$DOCKER_COMPOSE exec -T db mysqldump --all-databases -u root -p"$MARIADB_PASS" --default-character-set=utf8 | gzip > "$out"
+$DOCKER_COMPOSE exec -T mariadb mysqldump --all-databases -u root -p"$MARIADB_PASS" --default-character-set=utf8 | gzip > "$out"
 
 ls -lh $out
 echo "Done"

docker-compose.yml

@@ -21,7 +21,7 @@ services:
 
     mariadb:
         image: mariadb:latest
-        container_name: mariadb
+        container_name: keycloak_mariadb
         volumes:
             - "./keycloak_db:/var/lib/mysql:rw"
         environment: