be more specific on the ssh format

glours · ndeloof · commit 239138c26cfe · 2022-03-09T08:42:56.000+01:00
Signed-off-by: Guillaume Lours &lt;guillaume.lours@docker.com&gt;
diff --git a/schema/compose-spec.json b/schema/compose-spec.json
@@ -91,7 +91,13 @@
                 "context": {"type": "string"},
                 "dockerfile": {"type": "string"},
                 "args": {"$ref": "#/definitions/list_or_dict"},
-                "ssh": {"type": "string"},
+                "ssh": {
+                  "oneOf": [
+                    {},
+                    {"type": "string"},
+                    {"type": "array", "items": {"type": "string"}}
+                  ]
+                },
                 "labels": {"$ref": "#/definitions/list_or_dict"},
                 "cache_from": {"type": "array", "items": {"type": "string"}},
                 "cache_to": {"type": "array", "items": {"type": "string"}},
