Fix a CI issue that causes unit tests to run against the wrong version of CVAT (#5612)

There seems to be a bug somewhere in the Docker ecosystem (it's probably
either Docker Compose, Docker Buildx or BuildKit) that causes `docker
compose build` to ignore base images that are already present in the
system, and instead fetch them from Docker Hub, if there's a custom
Buildx builder configured. There's a bug report here:
<https://github.com/docker/compose/issues/9939>.

This bug means that when the build pipeline builds the `cvat_ci` image,
it's based on the latest release of `cvat/server` from Docker Hub
instead of the version that we just built. Consequently, we run the unit
tests against that release instead of the development version.

Fortunately, we don't actually need to set up a Buildx builder in most
jobs (including the `unit_testing` job), so just don't do that.

Also, use `cvat/server:local` as the base image in `Dockerfile.ci`. This
will prevent a similar bug from reoccurring in the future, since the
`local` tag should never be uploaded to Docker Hub.

.github/workflows/main.yml

@@ -135,9 +135,6 @@ jobs:
         with:
           python-version: '3.8'
 
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
-
       - name: Download CVAT server image
         uses: actions/download-artifact@v3
         with:
@@ -195,9 +192,6 @@ jobs:
     steps:
       - uses: actions/checkout@v3
 
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
-
       - name: Download CVAT server image
         uses: actions/download-artifact@v3
         with:
@@ -265,9 +259,6 @@ jobs:
     steps:
       - uses: actions/checkout@v3
 
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
-
       - uses: actions/setup-node@v3
         with:
             node-version: '16.x'

Dockerfile.ci

@@ -1,4 +1,4 @@
-FROM cvat/server
+FROM cvat/server:local
 
 ENV DJANGO_CONFIGURATION=testing
 USER root

cvat/apps/engine/serializers.py

@@ -20,7 +20,7 @@ from cvat.apps.engine.cloud_provider import get_cloud_storage_instance, Credenti
 from cvat.apps.engine.log import slogger
 from cvat.apps.engine.utils import parse_specific_attributes
 
-from drf_spectacular.utils import OpenApiExample, extend_schema_serializer
+from drf_spectacular.utils import OpenApiExample, extend_schema_field, extend_schema_serializer
 
 class BasicUserSerializer(serializers.ModelSerializer):
     def validate(self, attrs):
@@ -926,6 +926,13 @@ class FrameMetaSerializer(serializers.Serializer):
     name = serializers.CharField(max_length=1024)
     related_files = serializers.IntegerField()
 
+    # for compatibility with version 2.3.0
+    has_related_context = serializers.SerializerMethodField()
+
+    @extend_schema_field(serializers.BooleanField)
+    def get_has_related_context(self, obj: dict) -> bool:
+        return obj['related_files'] != 0
+
 class PluginsSerializer(serializers.Serializer):
     GIT_INTEGRATION = serializers.BooleanField()
     ANALYTICS = serializers.BooleanField()

cvat/apps/iam/tests/test_rest_api.py

@@ -150,7 +150,7 @@ class TestIamApi(APITestCase):
                 ForceLogin(user=self.user, client=self.client):
             response = self.client.get(self.ENDPOINT_WITH_AUTH)
             self.assertEqual(response.status_code, status.HTTP_403_FORBIDDEN)
-            self.assertEqual(response.json(), expected_reasons)
+            self.assertTrue(all([reason in str(response.content) for reason in expected_reasons]))
 
     def test_can_report_merged_denial_reasons(self):
         expected_reasons = [["hello", "world"], ["hi", "there"]]
@@ -159,7 +159,14 @@ class TestIamApi(APITestCase):
                 ForceLogin(user=self.user, client=self.client):
             response = self.client.get(self.ENDPOINT_WITH_AUTH)
             self.assertEqual(response.status_code, status.HTTP_403_FORBIDDEN)
-            self.assertEqual(response.json(), list(itertools.chain.from_iterable(expected_reasons)))
+            self.assertTrue(
+                all(
+                    [
+                        reason in str(response.content)
+                        for reason in itertools.chain(*expected_reasons)
+                    ]
+                )
+            )
 
     def test_can_allow_if_no_permission_matches(self):
         with self._mock_permissions(), ForceLogin(user=self.user, client=self.client):
@@ -179,4 +186,4 @@ class TestIamApi(APITestCase):
                 ForceLogin(user=self.user, client=self.client):
             response = self.client.get(self.ENDPOINT_WITH_AUTH)
             self.assertEqual(response.status_code, status.HTTP_403_FORBIDDEN)
-            self.assertEqual(response.json(), expected_reasons)
+            self.assertTrue(all([reason in str(response.content) for reason in expected_reasons]))