Build the frontend once per pipeline and reuse it in the dev backend image [CI]

scripts/test-linux-agent-build.py

@@ -218,6 +218,27 @@ esac
             env['MOSHIRO_AOT_SLOT_WAIT'] = '5'
             self.assertEqual(subprocess.run(['bash', script, 'sh', '-c', 'exit 7'], env=env).returncode, 7)
 
+    def test_web_build_is_shared_with_the_backend_of_the_same_pipeline(self):
+        with tempfile.TemporaryDirectory() as temp:
+            temp = Path(temp)
+            env = dict(os.environ, MOSHIRO_CI_STATE=str(temp / 'state'), CI_REPO_ID='1', CI_PIPELINE_NUMBER='2',
+                       MOSHIRO_SHARED_WEB_WAIT='1')
+            script = ROOT / 'ci/shared-web.sh'
+            # 复制一份脚本到假的仓库根，让它读写假的 web 目录
+            fake = temp / 'repo'
+            (fake / 'ci').mkdir(parents=True)
+            (fake / 'ci/shared-web.sh').write_text(script.read_text())
+            for app in ('display', 'admin'):
+                (fake / 'web' / app / 'dist').mkdir(parents=True)
+                (fake / 'web' / app / 'dist/index.html').write_text(app)
+            run = lambda *args: subprocess.run(['bash', str(fake / 'ci/shared-web.sh'), *args], env=env, capture_output=True, text=True)
+            self.assertEqual(run('fetch').returncode, 1)
+            self.assertEqual(run('publish').returncode, 0)
+            for app in ('display', 'admin'):
+                (fake / 'web' / app / 'dist/index.html').unlink()
+            self.assertEqual(run('fetch').returncode, 0)
+            self.assertEqual((fake / 'web/admin/dist/index.html').read_text(), 'admin')
+
 
 if __name__ == '__main__':
     unittest.main(verbosity=2)