install additional deps

Author: JoeWang1127

.cloudbuild/library_generation/cloudbuild-library-generation-integration-test.yaml

@@ -14,6 +14,7 @@
 
 timeout: 7200s # 2 hours
 substitutions:
+  _TEMP_TEST_IMAGE_ID: "temp-test-image:latest"
   _TEST_IMAGE_ID: "test-image:latest"
 steps:
 - name: gcr.io/cloud-builders/docker
@@ -30,14 +31,28 @@ steps:
   id: library-generation-build
   waitFor: ["-"]
 
+- name: gcr.io/cloud-builders/docker
+  entrypoint: bash
+  args:
+  - "c"
+  - |
+    docker build -t ${_TEST_IMAGE_ID} - << EOF
+    FROM ${_TEMP_TEST_IMAGE_ID}
+    RUN apk update && apk maven
+    EOF
+  env:
+  - "DOCKER_BUILDKIT=1"
+  id: additional-deps
+  waitFor: ["library-generation-build"]
+
 - name: ${_TEST_IMAGE_ID}
   entrypoint: python
   args: [
     "-m",
     "unittest",
     "hermetic_build/library_generation/tests/integration_tests.py"
   ]
-  waitFor: [ "library-generation-build" ]
+  waitFor: ["additional-deps"]
   id: integration-test
 
 options:

hermetic_build/library_generation/tests/integration_tests.py

@@ -60,7 +60,6 @@ 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:
@@ -195,16 +194,6 @@ def __copy_api_definition(cls, committish: str) -> str:
         shutil.rmtree(repo_dest)
         return api_temp_dir
 
-    @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,
-            env=dict(os.environ, DOCKER_BUILDKIT="1"),
-        )
-
     @classmethod
     def __download_generator_jar(cls, coordinates_file: str) -> None:
         """