Merge branch '4904-label-config-validation' of https://github.com/nginth/compose into nginth-4904-label-config-validation

Signed-off-by: Joffrey F <joffrey@docker.com>

12 files changed, 252 insertions, 51 deletions

diff --git a/compose/config/config_schema_v1.json b/compose/config/config_schema_v1.json
index 94354cda..2771f995 100644
--- a/compose/config/config_schema_v1.json
+++ b/compose/config/config_schema_v1.json
@@ -78,7 +78,7 @@
         "hostname": {"type": "string"},
         "image": {"type": "string"},
         "ipc": {"type": "string"},
-        "labels": {"$ref": "#/definitions/list_or_dict"},
+        "labels": {"$ref": "#/definitions/labels"},
         "links": {"type": "array", "items": {"type": "string"}, "uniqueItems": true},
         "log_driver": {"type": "string"},
         "log_opt": {"type": "object"},
@@ -166,6 +166,21 @@
       ]
     },
 
+    "labels": {
+      "oneOf": [
+        {
+          "type": "object",
+          "patternProperties": {
+            ".+": {
+              "type": "string"
+            }
+          },
+          "additionalProperties": false
+        },
+        {"type": "array", "items": {"type": "string"}, "uniqueItems": true}
+      ]
+    },
+
     "constraints": {
       "service": {
         "id": "#/definitions/constraints/service",
diff --git a/compose/config/config_schema_v2.0.json b/compose/config/config_schema_v2.0.json
index 8ab451a6..eddf787e 100644
--- a/compose/config/config_schema_v2.0.json
+++ b/compose/config/config_schema_v2.0.json
@@ -158,7 +158,7 @@
         "hostname": {"type": "string"},
         "image": {"type": "string"},
         "ipc": {"type": "string"},
-        "labels": {"$ref": "#/definitions/list_or_dict"},
+        "labels": {"$ref": "#/definitions/labels"},
         "links": {"type": "array", "items": {"type": "string"}, "uniqueItems": true},
 
         "logging": {
@@ -355,6 +355,21 @@
       ]
     },
 
+    "labels": {
+      "oneOf": [
+        {
+          "type": "object",
+          "patternProperties": {
+            ".+": {
+              "type": "string"
+            }
+          },
+          "additionalProperties": false
+        },
+        {"type": "array", "items": {"type": "string"}, "uniqueItems": true}
+      ]
+    },
+
     "blkio_limit": {
       "type": "object",
       "properties": {
diff --git a/compose/config/config_schema_v2.1.json b/compose/config/config_schema_v2.1.json
index f2ee2ce4..984c46c5 100644
--- a/compose/config/config_schema_v2.1.json
+++ b/compose/config/config_schema_v2.1.json
@@ -88,7 +88,7 @@
                 "context": {"type": "string"},
                 "dockerfile": {"type": "string"},
                 "args": {"$ref": "#/definitions/list_or_dict"},
-                "labels": {"$ref": "#/definitions/list_or_dict"}
+                "labels": {"$ref": "#/definitions/labels"}
               },
               "additionalProperties": false
             }
@@ -183,7 +183,7 @@
         "image": {"type": "string"},
         "ipc": {"type": "string"},
         "isolation": {"type": "string"},
-        "labels": {"$ref": "#/definitions/list_or_dict"},
+        "labels": {"$ref": "#/definitions/labels"},
         "links": {"type": "array", "items": {"type": "string"}, "uniqueItems": true},
 
         "logging": {
@@ -351,7 +351,7 @@
         },
         "internal": {"type": "boolean"},
         "enable_ipv6": {"type": "boolean"},
-        "labels": {"$ref": "#/definitions/list_or_dict"},
+        "labels": {"$ref": "#/definitions/labels"},
         "name": {"type": "string"}
       },
       "additionalProperties": false
@@ -375,7 +375,7 @@
           },
           "additionalProperties": false
         },
-        "labels": {"$ref": "#/definitions/list_or_dict"},
+        "labels": {"$ref": "#/definitions/labels"},
         "name": {"type": "string"}
       },
       "additionalProperties": false
@@ -409,6 +409,21 @@
       ]
     },
 
+    "labels": {
+      "oneOf": [
+        {
+          "type": "object",
+          "patternProperties": {
+            ".+": {
+              "type": "string"
+            }
+          },
+          "additionalProperties": false
+        },
+        {"type": "array", "items": {"type": "string"}, "uniqueItems": true}
+      ]
+    },
+
     "blkio_limit": {
       "type": "object",
       "properties": {
diff --git a/compose/config/config_schema_v2.2.json b/compose/config/config_schema_v2.2.json
index b25aa71e..8e3927e1 100644
--- a/compose/config/config_schema_v2.2.json
+++ b/compose/config/config_schema_v2.2.json
@@ -88,7 +88,7 @@
                 "context": {"type": "string"},
                 "dockerfile": {"type": "string"},
                 "args": {"$ref": "#/definitions/list_or_dict"},
-                "labels": {"$ref": "#/definitions/list_or_dict"},
+                "labels": {"$ref": "#/definitions/labels"},
                 "cache_from": {"$ref": "#/definitions/list_of_strings"},
                 "network": {"type": "string"}
               },
@@ -189,7 +189,7 @@
         "init": {"type": ["boolean", "string"]},
         "ipc": {"type": "string"},
         "isolation": {"type": "string"},
-        "labels": {"$ref": "#/definitions/list_or_dict"},
+        "labels": {"$ref": "#/definitions/labels"},
         "links": {"type": "array", "items": {"type": "string"}, "uniqueItems": true},
 
         "logging": {
@@ -358,7 +358,7 @@
         },
         "internal": {"type": "boolean"},
         "enable_ipv6": {"type": "boolean"},
-        "labels": {"$ref": "#/definitions/list_or_dict"},
+        "labels": {"$ref": "#/definitions/labels"},
         "name": {"type": "string"}
       },
       "additionalProperties": false
@@ -382,7 +382,7 @@
           },
           "additionalProperties": false
         },
-        "labels": {"$ref": "#/definitions/list_or_dict"},
+        "labels": {"$ref": "#/definitions/labels"},
         "name": {"type": "string"}
       },
       "additionalProperties": false
@@ -416,6 +416,21 @@
       ]
     },
 
+    "labels": {
+      "oneOf": [
+        {
+          "type": "object",
+          "patternProperties": {
+            ".+": {
+              "type": "string"
+            }
+          },
+          "additionalProperties": false
+        },
+        {"type": "array", "items": {"type": "string"}, "uniqueItems": true}
+      ]
+    },
+
     "blkio_limit": {
       "type": "object",
       "properties": {
diff --git a/compose/config/config_schema_v2.3.json b/compose/config/config_schema_v2.3.json
index 30f00dfe..42e2afda 100644
--- a/compose/config/config_schema_v2.3.json
+++ b/compose/config/config_schema_v2.3.json
@@ -88,7 +88,7 @@
                 "context": {"type": "string"},
                 "dockerfile": {"type": "string"},
                 "args": {"$ref": "#/definitions/list_or_dict"},
-                "labels": {"$ref": "#/definitions/list_or_dict"},
+                "labels": {"$ref": "#/definitions/labels"},
                 "cache_from": {"$ref": "#/definitions/list_of_strings"},
                 "network": {"type": "string"},
                 "target": {"type": "string"},
@@ -192,7 +192,7 @@
         "init": {"type": ["boolean", "string"]},
         "ipc": {"type": "string"},
         "isolation": {"type": "string"},
-        "labels": {"$ref": "#/definitions/list_or_dict"},
+        "labels": {"$ref": "#/definitions/labels"},
         "links": {"type": "array", "items": {"type": "string"}, "uniqueItems": true},
 
         "logging": {
@@ -395,7 +395,7 @@
         },
         "internal": {"type": "boolean"},
         "enable_ipv6": {"type": "boolean"},
-        "labels": {"$ref": "#/definitions/list_or_dict"},
+        "labels": {"$ref": "#/definitions/labels"},
         "name": {"type": "string"}
       },
       "additionalProperties": false
@@ -419,7 +419,7 @@
           },
           "additionalProperties": false
         },
-        "labels": {"$ref": "#/definitions/list_or_dict"},
+        "labels": {"$ref": "#/definitions/labels"},
         "name": {"type": "string"}
       },
       "additionalProperties": false
@@ -453,6 +453,21 @@
       ]
     },
 
+    "labels": {
+      "oneOf": [
+        {
+          "type": "object",
+          "patternProperties": {
+            ".+": {
+              "type": "string"
+            }
+          },
+          "additionalProperties": false
+        },
+        {"type": "array", "items": {"type": "string"}, "uniqueItems": true}
+      ]
+    },
+
     "blkio_limit": {
       "type": "object",
       "properties": {
diff --git a/compose/config/config_schema_v3.0.json b/compose/config/config_schema_v3.0.json
index fa601bed..10c36352 100644
--- a/compose/config/config_schema_v3.0.json
+++ b/compose/config/config_schema_v3.0.json
@@ -105,7 +105,7 @@
         "hostname": {"type": "string"},
         "image": {"type": "string"},
         "ipc": {"type": "string"},
-        "labels": {"$ref": "#/definitions/list_or_dict"},
+        "labels": {"$ref": "#/definitions/labels"},
         "links": {"type": "array", "items": {"type": "string"}, "uniqueItems": true},
 
         "logging": {
@@ -223,7 +223,7 @@
       "properties": {
         "mode": {"type": "string"},
         "replicas": {"type": "integer"},
-        "labels": {"$ref": "#/definitions/list_or_dict"},
+        "labels": {"$ref": "#/definitions/labels"},
         "update_config": {
           "type": "object",
           "properties": {
@@ -310,7 +310,7 @@
           "additionalProperties": false
         },
         "internal": {"type": "boolean"},
-        "labels": {"$ref": "#/definitions/list_or_dict"}
+        "labels": {"$ref": "#/definitions/labels"}
       },
       "additionalProperties": false
     },
@@ -333,7 +333,7 @@
           },
           "additionalProperties": false
         },
-        "labels": {"$ref": "#/definitions/list_or_dict"}
+        "labels": {"$ref": "#/definitions/labels"}
       },
       "additionalProperties": false
     },
@@ -366,6 +366,21 @@
       ]
     },
 
+    "labels": {
+      "oneOf": [
+        {
+          "type": "object",
+          "patternProperties": {
+            ".+": {
+              "type": "string"
+            }
+          },
+          "additionalProperties": false
+        },
+        {"type": "array", "items": {"type": "string"}, "uniqueItems": true}
+      ]
+    },
+
     "constraints": {
       "service": {
         "id": "#/definitions/constraints/service",
diff --git a/compose/config/config_schema_v3.1.json b/compose/config/config_schema_v3.1.json
index 41da8965..8630ec31 100644
--- a/compose/config/config_schema_v3.1.json
+++ b/compose/config/config_schema_v3.1.json
@@ -116,7 +116,7 @@
         "hostname": {"type": "string"},
         "image": {"type": "string"},
         "ipc": {"type": "string"},
-        "labels": {"$ref": "#/definitions/list_or_dict"},
+        "labels": {"$ref": "#/definitions/labels"},
         "links": {"type": "array", "items": {"type": "string"}, "uniqueItems": true},
 
         "logging": {
@@ -252,7 +252,7 @@
       "properties": {
         "mode": {"type": "string"},
         "replicas": {"type": "integer"},
-        "labels": {"$ref": "#/definitions/list_or_dict"},
+        "labels": {"$ref": "#/definitions/labels"},
         "update_config": {
           "type": "object",
           "properties": {
@@ -339,7 +339,7 @@
           "additionalProperties": false
         },
         "internal": {"type": "boolean"},
-        "labels": {"$ref": "#/definitions/list_or_dict"}
+        "labels": {"$ref": "#/definitions/labels"}
       },
       "additionalProperties": false
     },
@@ -362,7 +362,7 @@
           },
           "additionalProperties": false
         },
-        "labels": {"$ref": "#/definitions/list_or_dict"}
+        "labels": {"$ref": "#/definitions/labels"}
       },
       "additionalProperties": false
     },
@@ -378,7 +378,7 @@
             "name": {"type": "string"}
           }
         },
-        "labels": {"$ref": "#/definitions/list_or_dict"}
+        "labels": {"$ref": "#/definitions/labels"}
       },
       "additionalProperties": false
     },
@@ -411,6 +411,21 @@
       ]
     },
 
+    "labels": {
+      "oneOf": [
+        {
+          "type": "object",
+          "patternProperties": {
+            ".+": {
+              "type": "string"
+            }
+          },
+          "additionalProperties": false
+        },
+        {"type": "array", "items": {"type": "string"}, "uniqueItems": true}
+      ]
+    },
+
     "constraints": {
       "service": {
         "id": "#/definitions/constraints/service",
diff --git a/compose/config/config_schema_v3.2.json b/compose/config/config_schema_v3.2.json
index 0baf6a1a..5eccdea7 100644
--- a/compose/config/config_schema_v3.2.json
+++ b/compose/config/config_schema_v3.2.json
@@ -118,7 +118,7 @@
         "hostname": {"type": "string"},
         "image": {"type": "string"},
         "ipc": {"type": "string"},
-        "labels": {"$ref": "#/definitions/list_or_dict"},
+        "labels": {"$ref": "#/definitions/labels"},
         "links": {"type": "array", "items": {"type": "string"}, "uniqueItems": true},
 
         "logging": {
@@ -299,7 +299,7 @@
         "mode": {"type": "string"},
         "endpoint_mode": {"type": "string"},
         "replicas": {"type": "integer"},
-        "labels": {"$ref": "#/definitions/list_or_dict"},
+        "labels": {"$ref": "#/definitions/labels"},
         "update_config": {
           "type": "object",
           "properties": {
@@ -387,7 +387,7 @@
         },
         "internal": {"type": "boolean"},
         "attachable": {"type": "boolean"},
-        "labels": {"$ref": "#/definitions/list_or_dict"}
+        "labels": {"$ref": "#/definitions/labels"}
       },
       "additionalProperties": false
     },
@@ -410,7 +410,7 @@
           },
           "additionalProperties": false
         },
-        "labels": {"$ref": "#/definitions/list_or_dict"}
+        "labels": {"$ref": "#/definitions/labels"}
       },
       "additionalProperties": false
     },
@@ -426,7 +426,7 @@
             "name": {"type": "string"}
           }
         },
-        "labels": {"$ref": "#/definitions/list_or_dict"}
+        "labels": {"$ref": "#/definitions/labels"}
       },
       "additionalProperties": false
     },
@@ -459,6 +459,21 @@
       ]
     },
 
+    "labels": {
+      "oneOf": [
+        {
+          "type": "object",
+          "patternProperties": {
+            ".+": {
+              "type": "string"
+            }
+          },
+          "additionalProperties": false
+        },
+        {"type": "array", "items": {"type": "string"}, "uniqueItems": true}
+      ]
+    },
+
     "constraints": {
       "service": {
         "id": "#/definitions/constraints/service",
diff --git a/compose/config/config_schema_v3.3.json b/compose/config/config_schema_v3.3.json
index efc0fdbd..f63842b9 100644
--- a/compose/config/config_schema_v3.3.json
+++ b/compose/config/config_schema_v3.3.json
@@ -83,7 +83,7 @@
                 "context": {"type": "string"},
                 "dockerfile": {"type": "string"},
                 "args": {"$ref": "#/definitions/list_or_dict"},
-                "labels": {"$ref": "#/definitions/list_or_dict"},
+                "labels": {"$ref": "#/definitions/labels"},
                 "cache_from": {"$ref": "#/definitions/list_of_strings"}
               },
               "additionalProperties": false
@@ -151,7 +151,7 @@
         "hostname": {"type": "string"},
         "image": {"type": "string"},
         "ipc": {"type": "string"},
-        "labels": {"$ref": "#/definitions/list_or_dict"},
+        "labels": {"$ref": "#/definitions/labels"},
         "links": {"type": "array", "items": {"type": "string"}, "uniqueItems": true},
 
         "logging": {
@@ -332,7 +332,7 @@
         "mode": {"type": "string"},
         "endpoint_mode": {"type": "string"},
         "replicas": {"type": "integer"},
-        "labels": {"$ref": "#/definitions/list_or_dict"},
+        "labels": {"$ref": "#/definitions/labels"},
         "update_config": {
           "type": "object",
           "properties": {
@@ -430,7 +430,7 @@
         },
         "internal": {"type": "boolean"},
         "attachable": {"type": "boolean"},
-        "labels": {"$ref": "#/definitions/list_or_dict"}
+        "labels": {"$ref": "#/definitions/labels"}
       },
       "additionalProperties": false
     },
@@ -453,7 +453,7 @@
           },
           "additionalProperties": false
         },
-        "labels": {"$ref": "#/definitions/list_or_dict"}
+        "labels": {"$ref": "#/definitions/labels"}
       },
       "additionalProperties": false
     },
@@ -469,7 +469,7 @@
             "name": {"type": "string"}
           }
         },
-        "labels": {"$ref": "#/definitions/list_or_dict"}
+        "labels": {"$ref": "#/definitions/labels"}
       },
       "additionalProperties": false
     },
@@ -485,7 +485,7 @@
             "name": {"type": "string"}
           }
         },
-        "labels": {"$ref": "#/definitions/list_or_dict"}
+        "labels": {"$ref": "#/definitions/labels"}
       },
       "additionalProperties": false
     },
@@ -518,6 +518,21 @@
       ]
     },
 
+    "labels": {
+      "oneOf": [
+        {
+          "type": "object",
+          "patternProperties": {
+            ".+": {
+              "type": "string"
+            }
+          },
+          "additionalProperties": false
+        },
+        {"type": "array", "items": {"type": "string"}, "uniqueItems": true}
+      ]
+    },
+
     "constraints": {
       "service": {
         "id": "#/definitions/constraints/service",
diff --git a/compose/config/config_schema_v3.4.json b/compose/config/config_schema_v3.4.json
index 576ecfd8..23e95544 100644
--- a/compose/config/config_schema_v3.4.json
+++ b/compose/config/config_schema_v3.4.json
@@ -85,7 +85,7 @@
                 "context": {"type": "string"},
                 "dockerfile": {"type": "string"},
                 "args": {"$ref": "#/definitions/list_or_dict"},
-                "labels": {"$ref": "#/definitions/list_or_dict"},
+                "labels": {"$ref": "#/definitions/labels"},
                 "cache_from": {"$ref": "#/definitions/list_of_strings"},
                 "network": {"type": "string"},
                 "target": {"type": "string"}
@@ -155,7 +155,7 @@
         "hostname": {"type": "string"},
         "image": {"type": "string"},
         "ipc": {"type": "string"},
-        "labels": {"$ref": "#/definitions/list_or_dict"},
+        "labels": {"$ref": "#/definitions/labels"},
         "links": {"type": "array", "items": {"type": "string"}, "uniqueItems": true},
 
         "logging": {
@@ -337,7 +337,7 @@
         "mode": {"type": "string"},
         "endpoint_mode": {"type": "string"},
         "replicas": {"type": "integer"},
-        "labels": {"$ref": "#/definitions/list_or_dict"},
+        "labels": {"$ref": "#/definitions/labels"},
         "update_config": {
           "type": "object",
           "properties": {
@@ -438,7 +438,7 @@
         },
         "internal": {"type": "boolean"},
         "attachable": {"type": "boolean"},
-        "labels": {"$ref": "#/definitions/list_or_dict"}
+        "labels": {"$ref": "#/definitions/labels"}
       },
       "additionalProperties": false
     },
@@ -462,7 +462,7 @@
           },
           "additionalProperties": false
         },
-        "labels": {"$ref": "#/definitions/list_or_dict"}
+        "labels": {"$ref": "#/definitions/labels"}
       },
       "additionalProperties": false
     },
@@ -478,7 +478,7 @@
             "name": {"type": "string"}
           }
         },
-        "labels": {"$ref": "#/definitions/list_or_dict"}
+        "labels": {"$ref": "#/definitions/labels"}
       },
       "additionalProperties": false
     },
@@ -494,7 +494,7 @@
             "name": {"type": "string"}
           }
         },
-        "labels": {"$ref": "#/definitions/list_or_dict"}
+        "labels": {"$ref": "#/definitions/labels"}
       },
       "additionalProperties": false
     },
@@ -527,6 +527,21 @@
       ]
     },
 
+    "labels": {
+      "oneOf": [
+        {
+          "type": "object",
+          "patternProperties": {
+            ".+": {
+              "type": "string"
+            }
+          },
+          "additionalProperties": false
+        },
+        {"type": "array", "items": {"type": "string"}, "uniqueItems": true}
+      ]
+    },
+
     "constraints": {
       "service": {
         "id": "#/definitions/constraints/service",
diff --git a/compose/config/config_schema_v3.5.json b/compose/config/config_schema_v3.5.json
index 565da019..e3bdecbc 100644
--- a/compose/config/config_schema_v3.5.json
+++ b/compose/config/config_schema_v3.5.json
@@ -84,7 +84,7 @@
                 "context": {"type": "string"},
                 "dockerfile": {"type": "string"},
                 "args": {"$ref": "#/definitions/list_or_dict"},
-                "labels": {"$ref": "#/definitions/list_or_dict"},
+                "labels": {"$ref": "#/definitions/labels"},
                 "cache_from": {"$ref": "#/definitions/list_of_strings"},
                 "network": {"type": "string"},
                 "target": {"type": "string"},
@@ -156,7 +156,7 @@
         "image": {"type": "string"},
         "ipc": {"type": "string"},
         "isolation": {"type": "string"},
-        "labels": {"$ref": "#/definitions/list_or_dict"},
+        "labels": {"$ref": "#/definitions/labels"},
         "links": {"type": "array", "items": {"type": "string"}, "uniqueItems": true},
 
         "logging": {
@@ -338,7 +338,7 @@
         "mode": {"type": "string"},
         "endpoint_mode": {"type": "string"},
         "replicas": {"type": "integer"},
-        "labels": {"$ref": "#/definitions/list_or_dict"},
+        "labels": {"$ref": "#/definitions/labels"},
         "update_config": {
           "type": "object",
           "properties": {
@@ -464,7 +464,7 @@
         },
         "internal": {"type": "boolean"},
         "attachable": {"type": "boolean"},
-        "labels": {"$ref": "#/definitions/list_or_dict"}
+        "labels": {"$ref": "#/definitions/labels"}
       },
       "additionalProperties": false
     },
@@ -488,7 +488,7 @@
           },
           "additionalProperties": false
         },
-        "labels": {"$ref": "#/definitions/list_or_dict"}
+        "labels": {"$ref": "#/definitions/labels"}
       },
       "additionalProperties": false
     },
@@ -505,7 +505,7 @@
             "name": {"type": "string"}
           }
         },
-        "labels": {"$ref": "#/definitions/list_or_dict"}
+        "labels": {"$ref": "#/definitions/labels"}
       },
       "additionalProperties": false
     },
@@ -522,7 +522,7 @@
             "name": {"type": "string"}
           }
         },
-        "labels": {"$ref": "#/definitions/list_or_dict"}
+        "labels": {"$ref": "#/definitions/labels"}
       },
       "additionalProperties": false
     },
@@ -555,6 +555,21 @@
       ]
     },
 
+    "labels": {
+      "oneOf": [
+        {
+          "type": "object",
+          "patternProperties": {
+            ".+": {
+              "type": "string"
+            }
+          },
+          "additionalProperties": false
+        },
+        {"type": "array", "items": {"type": "string"}, "uniqueItems": true}
+      ]
+    },
+
     "constraints": {
       "service": {
         "id": "#/definitions/constraints/service",
diff --git a/tests/unit/config/config_test.py b/tests/unit/config/config_test.py
index cfbd4cf3..04e495f9 100644
--- a/tests/unit/config/config_test.py
+++ b/tests/unit/config/config_test.py
@@ -2747,6 +2747,25 @@ class ConfigTest(unittest.TestCase):
         ]
         assert service_sort(service_dicts) == service_sort(expected)
 
+    def test_config_invalid_service_label_validation(self):
+        config_details = build_config_details(
+            {
+                'version': '3.5',
+                'services': {
+                    'web': {
+                        'image': 'busybox',
+                        'labels': {
+                            "key": 12345
+                        }
+                    },
+                },
+            }
+        )
+        with pytest.raises(ConfigurationError) as exc:
+            config.load(config_details)
+
+        assert "which is an invalid type, it should be a string" in exc.exconly()
+
     def test_service_volume_invalid_config(self):
         config_details = build_config_details(
             {
@@ -2766,14 +2785,31 @@ class ConfigTest(unittest.TestCase):
                                 }
                             }
                         ]
-                    },
-                },
+                    }
+                }
             }
         )
         with pytest.raises(ConfigurationError) as exc:
             config.load(config_details)
+
         assert "services.web.volumes contains unsupported option: 'garbage'" in exc.exconly()
 
+    def test_config_valid_service_label_validation(self):
+        config_details = build_config_details(
+            {
+                'version': '3.5',
+                'services': {
+                    'web': {
+                        'image': 'busybox',
+                        'labels': {
+                            "key": "string"
+                        }
+                    },
+                },
+            }
+        )
+        config.load(config_details)
+
 
 class NetworkModeTest(unittest.TestCase):