diff --git a/cd.sh b/cd.sh
index dbbfd8f..1968ca2 100644
--- a/cd.sh
+++ b/cd.sh
@@ -1,11 +1,29 @@
 #! /usr/bin/env bash
 
-CD_DNS_SERVERS=(
-'9.9.9.9'
-)
 CD_NAME='cd'
 CD_PROJECTS_PARENT='rwx'
 
+function cd_main {
+    cd_set_environment
+    cd_write_environment
+    cd_set_dns_resolving \
+    '9.9.9.9'
+    cd_set_packages_repositories
+    cd_set_packages_configuration
+    cd_set_https_verification_off
+    cd_update_packages_catalog
+    cd_install_packages_tools
+    cd_install_ca
+    cd_set_https_verification_on
+    cd_update_packages_catalog
+    cd_upgrade_packages
+    cd_install_git
+    cd_install_python
+    cd_clean_packages_cache
+    cd_install
+    cd_bootstrap
+}
+
 function cd_set_environment {
     CD_DNS_FILE='/etc/resolv.conf'
     CD_ENV="$(mktemp)"
@@ -105,7 +123,7 @@ function cd_set_dns_resolving {
 local server
 local text=''
     cd_step "${FUNCNAME}"
-    for server in "${CD_DNS_SERVERS[@]}" ; do
+    for server in "${@}" ; do
         text+="nameserver ${server}
 "
     done
@@ -253,24 +271,4 @@ function cd_bootstrap {
     "${CD_PYTHON_COMMAND}" -m "${CD_NAME}"
 }
 
-function cd_main {
-    cd_set_environment
-    cd_write_environment
-    cd_set_dns_resolving
-    cd_set_packages_repositories
-    cd_set_packages_configuration
-    cd_set_https_verification_off
-    cd_update_packages_catalog
-    cd_install_packages_tools
-    cd_install_ca
-    cd_set_https_verification_on
-    cd_update_packages_catalog
-    cd_upgrade_packages
-    cd_install_git
-    cd_install_python
-    cd_clean_packages_cache
-    cd_install
-    cd_bootstrap
-}
-
 cd_main