fix(refactor): Change "service-groups" to "groups" (#86)

Changed "service-groups" to "groups" and update documentation
Solving issue SPEC: Rename spec service-groups to groups #60

.containers-sugar.yaml

@@ -4,7 +4,7 @@ env-file: .env
 defaults:
   group: {{ env.KXGR_GROUP }}
   project-name: sugar-{{ env.KXGR_PROJECT_NAME }}
-service-groups:
+groups:
   - name: group1
     project-name: project1  # optional
     compose-path: tests/containers/group1/compose.yaml

README.md

@@ -76,7 +76,7 @@ version: 1.0
 compose-app: docker-compose
 default:
   group: {{ env.ENV }}
-service-groups:
+groups:
   - name: group1
     project-name: project1
     compose-path: containers/tests/group1/compose.yaml

containers_sugar/sugar.py

@@ -117,7 +117,7 @@ def _check_config_file(self):
         return Path(self.config_file).exists()
 
     def _filter_service_group(self):
-        groups = self.config['service-groups']
+        groups = self.config['groups']
 
         if not self.args.get('service_group'):
             default_group = self.defaults.get('group')
@@ -279,7 +279,7 @@ def _verify_args(self):
             )
 
     def _verify_config(self):
-        if not len(self.config['service-groups']):
+        if not len(self.config['groups']):
             KxgrLogs.raise_error(
                 'No service groups found.',
                 KxgrErrorType.KXGR_INVALID_CONFIGURATION,