Update compose-spec.json

Signed-off-by: GitHub <[email protected]>

Author: laurazard

schema/compose-spec.json

@@ -91,6 +91,7 @@
               "properties": {
                 "context": {"type": "string"},
                 "dockerfile": {"type": "string"},
+                "dockerfile_inline": {"type": "string"},
                 "args": {"$ref": "#/definitions/list_or_dict"},
                 "ssh": {"$ref": "#/definitions/list_or_dict"},
                 "labels": {"$ref": "#/definitions/list_or_dict"},