chore: improve docker build and lighthouse config

Dockerfile

@@ -35,6 +35,7 @@ WORKDIR /app/tianji
 # We don't need the standalone Chromium
 ENV PUPPETEER_SKIP_DOWNLOAD=true
 ENV PUPPETEER_EXECUTABLE_PATH=/usr/bin/chromium-browser
+ENV DEBUG=puppeteer:*
 
 RUN apk add --no-cache \
     udev \

src/server/utils/screenshot/lighthouse.ts

@@ -8,10 +8,13 @@ export async function generateLighthouse(url: string): Promise<Result> {
   const browser = await puppeteer.launch({
     // Set to false if you want to see the script in action.
     headless: 'new',
-    args: ['--no-sandbox'],
+    args: ['--no-sandbox', '--single-process'],
     defaultViewport: null,
     ignoreDefaultArgs: ['--enable-automation'],
+    dumpio: true,
   });
+
+  try {
     const page = await browser.newPage();
 
     // Wait for Lighthouse to open url, then inject our stylesheet.
@@ -28,11 +31,14 @@ export async function generateLighthouse(url: string): Promise<Result> {
       throw new Error('Lighthouse failed to generate report');
     }
 
+    page.close({ runBeforeUnload: false });
+
     const { lhr } = res;
 
-  await browser.close();
-
     return lhr;
+  } finally {
+    await browser.close();
+  }
 }
 
 export function getLighthouseReport(lhr: Result): string {