Fix docker command in tests (#5538)

This PR fixes a problem with local running of tests introduced in #5498.
When running tests locally, there can be multiple tags available, while
we need the `dev` tag, which should be created right before tests are
executed.

- Added the missing image tag in the docker run command

tests/python/rest_api/test_tasks.py

@@ -745,7 +745,7 @@ class TestPostTaskData:
                 f"{tmp_dir}:/local",
                 "--entrypoint",
                 "python3",
-                "cvat/server",
+                "cvat/server:dev",
                 "utils/dataset_manifest/create.py",
                 "--output-dir",
                 "/local",