diff --git a/cron/bin/dump-targets-by-target-type.rb b/cron/bin/dump-targets-by-target-type.rb
index e80dd28..a070e05 100755
--- a/cron/bin/dump-targets-by-target-type.rb
+++ b/cron/bin/dump-targets-by-target-type.rb
@@ -5,7 +5,7 @@ require "json"
 
 target_type = ARGV[0]
 
-client = Mysql2::Client.new(:host => "localhost", :username => "prom", :password => "prom", :database => "registry")
+client = Mysql2::Client.new(:host => "db", :username => "prom", :password => "prom", :database => "registry")
 query = "SELECT t.target_id , t.target, tl.label_key,tl.label_value FROM targets t 
 JOIN targets_lables tl ON t.target_id = tl.target_id 
 WHERE t.y = 1 AND tl.target_id IN (SELECT t.target_id FROM targets t 
diff --git a/docker-compose.yml b/docker-compose.yml
index f594ff7..609ed05 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,6 +1,7 @@
 services:
   prometheus:
     image: prom/prometheus:latest
+    container_name: prometheus
     restart: always
     ports:
       - 9090:9090
@@ -11,6 +12,7 @@ services:
 
   web:
     image: nginx:latest
+    container_name: web
     ports:
       - 8080:80
     volumes:
@@ -18,6 +20,7 @@ services:
 
   blackbox:
     image: prom/blackbox-exporter:latest
+    container_name: blackbox    
     restart: always
     ports:
       - 9115:9115
@@ -26,6 +29,7 @@ services:
 
   db:
     image: mariadb:lts
+    container_name: db     
     restart: always
     environment:
       MARIADB_ROOT_PASSWORD: example
@@ -40,6 +44,7 @@ services:
 
   cron:
     image: mycron
+    container_name: cron
     build:
       context: ./cron
       dockerfile: Dockerfile