* helper script use container-like launch logic

bash/dump.sh

@@ -1,4 +1,9 @@
 #!/bin/bash
-cd $HOME/structure
-dbId=$(docker ps -q --filter name=db)
-docker exec $dbId mysqldump -u root -p123456 $1 | pv > $2
+CONTAINER=$(docker ps | grep db | awk '{print $1}')
+
+if [[ -z "${CONTAINER}" ]]; then
+  echo "Unable to find container: db"
+  exit 1
+fi
+
+docker exec -ti ${CONTAINER} mysqldump -u root -p123456 $1 | pv > $2