do not build image in integration test

library_generation/test/integration_tests.py

@@ -62,7 +62,6 @@ class IntegrationTest(unittest.TestCase):
     @classmethod
     def setUpClass(cls) -> None:
         cls.__download_generator_jar(coordinates_file=generator_jar_coordinates_file)
-        cls.__build_image(docker_file=build_file, cwd=repo_root_dir)
 
     @classmethod
     def setUp(cls) -> None:
@@ -189,15 +188,6 @@ def test_entry_point_running_in_container(self):
                 print("  PR description comparison succeed.")
         self.__remove_generated_files()
 
-    @classmethod
-    def __build_image(cls, docker_file: str, cwd: str):
-        # we build the docker image without removing intermediate containers so
-        # we can re-test more quickly
-        subprocess.check_call(
-            ["docker", "build", "-f", docker_file, "-t", image_tag, "."],
-            cwd=cwd,
-        )
-
     @classmethod
     def __download_generator_jar(cls, coordinates_file: str) -> None:
         """