Instantiate Config instance instead of using class namespace

restic_volume_backup/cli.py

@@ -7,9 +7,7 @@ from restic_volume_backup.containers import RunningContainers
 
 def main():
     args = parse_args()
-
-    Config.check()
-
+    config = Config()
     containers = RunningContainers()
 
     if args.action == 'status':
@@ -33,7 +31,7 @@ def main():
         #     restic.backup_volume(Config.repository, vol)
 
     elif args.mode == 'snapshots':
-        restic.snapshots(Config.repository)
+        restic.snapshots(config.repository)
 
 
 def parse_args():

restic_volume_backup/config.py

@@ -2,14 +2,15 @@ import os
 
 
 class Config:
-    repository = os.environ['RESTIC_REPOSITORY']
-    password = os.environ['RESTIC_PASSWORD']
-    docker_base_url = os.environ.get('DOCKER_BASE_URL') or "unix://tmp/docker.sock"
+    def __init__(self):
+        self.repository = os.environ['RESTIC_REPOSITORY']
+        self.password = os.environ['RESTIC_PASSWORD']
+        self.docker_base_url = os.environ.get('DOCKER_BASE_URL') or "unix://tmp/docker.sock"
+        self.check()
 
-    @classmethod
-    def check(cls):
-        if not cls.repository:
+    def check(self):
+        if not self.repository:
             raise ValueError("CONTAINER env var not set")
 
-        if not cls.password:
+        if not self.password:
             raise ValueError("PASSWORD env var not set")