diff --git a/bopytex/service.py b/bopytex/service.py
index b7243ba..808c5a1 100755
--- a/bopytex/service.py
+++ b/bopytex/service.py
@@ -6,6 +6,7 @@ Producing then compiling templates
 """
 
 import importlib.util
+import os
 from pathlib import Path
 from bopytex.scheduler import Scheduler
 from bopytex import default_config
@@ -51,18 +52,27 @@ def clean_vars_keys(
     return new_dict
 
 
-def get_config(options: dict) -> dict:
-    """ Look for options["configfile"] to load it with default_config and options """
-    try:
-        options["configfile"]
-    except KeyError:
-        local_config = {}
+def config_from_file(filename: str) -> dict:
+    if Path(filename).exists():
+        local_config = vars(load_module(filename))
+        return clean_vars_keys(local_config)
     else:
-        if Path(options["configfile"]).exists():
-            local_config = vars(load_module(options["configfile"]))
-            local_config = clean_vars_keys(local_config)
-        else:
-            local_config = {}
+        return {}
+
+
+def build_config(options: dict) -> dict:
+    """Look for options["configfile"] to load it with default_config and options"""
+    configfile = ""
+    try:
+        configfile = options["configfile"]
+    except KeyError:
+        pass
+    try:
+        configfile = os.environ["BOPYTEXCONFIG"]
+    except KeyError:
+        pass
+
+    local_config = config_from_file(configfile)
 
     config = clean_vars_keys(vars(default_config))
     config.update(local_config)
@@ -72,7 +82,7 @@ def get_config(options: dict) -> dict:
 
 def main(**options):
 
-    config = get_config(options)
+    config = build_config(options)
 
     orcherstre = orcherstrator(
         config, planner=default_config.planner, dispatcher=default_config.dispatcher
diff --git a/test/test_service.py b/test/test_service.py
index a495180..fc1bc1d 100644
--- a/test/test_service.py
+++ b/test/test_service.py
@@ -2,7 +2,7 @@ import os
 import pytest
 
 from bopytex.planner import fake_planner
-from bopytex.service import get_config, orcherstrator
+from bopytex.service import build_config, orcherstrator
 from bopytex.tasks import Task
 from bopytex.worker import Dispatcher
 from .fakes.workers import fake_worker
@@ -40,7 +40,7 @@ jinja2 = {
 
 def test_get_config_with_configfile(config_file, tmp_path):
     os.chdir(tmp_path)
-    config = get_config({"from_option": "config", "configfile": str(config_file)})
+    config = build_config({"from_option": "config", "configfile": str(config_file)})
     assert type(config) == dict
     assert set(config.keys()) == {
         "generate",