docker-mode switch in settings and tags

InvenTree/InvenTree/settings.py

@@ -87,6 +87,11 @@ DEBUG = _is_true(get_setting(
     CONFIG.get('debug', True)
 ))
 
+DOCKER = _is_true(get_setting(
+    'INVENTREE_DOCKER',
+    False
+))
+
 # Configure logging settings
 log_level = get_setting(
     'INVENTREE_LOG_LEVEL',

InvenTree/part/templatetags/inventree_extras.py

@@ -81,6 +81,13 @@ def inventree_in_debug_mode(*args, **kwargs):
     return djangosettings.DEBUG
 
 
+@register.simple_tag()
+def inventree_docker_mode(*args, **kwargs):
+    """ Return True if the server is running as a Docker image """
+
+    return djangosettings.DOCKER
+
+
 @register.simple_tag()
 def inventree_db_engine(*args, **kwargs):
     """ Return the InvenTree database backend e.g. 'postgresql' """