diff --git a/.gitignore b/.gitignore
index 5d576886..14601bd2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,6 +5,7 @@ molecule/**/.molecule/
 molecule/**/__pycache__/
 molecule/**/.cache
 molecule/**/.pytest_cache
+molecule/custom_env.yml
 README.md.orig.*
 README.md.toc.*
 *.pyc
diff --git a/molecule/default-playbook.yml b/molecule/default-playbook.yml
index d3fcc7a8..e18a916e 100644
--- a/molecule/default-playbook.yml
+++ b/molecule/default-playbook.yml
@@ -6,3 +6,15 @@
   vars_files:
     - ssl-{{ ansible_os_family }}.yml
     - nexus_test_vars.yml
+  # Allow to add some extra env for guest
+  # for local tests purposes (e.g. set proxy)
+  # Usage: create molecule/custom_env.yml and define molecule_custom_env
+  #
+  # ---
+  # molecule_custom_env:
+  #   http_proxy: http://my.proxy:8080
+  # ...
+  #
+  # Call molecule converge with extra vars loading the file
+  # molecule converge -s <scenario> -- -e @../custom_env.yml
+  environment: "{{ molecule_custom_env | default({}) }}"