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DockerでPlaywrightを起動する。

Last updated at Posted at 2023-06-13

PlaywrightでDockerを動かす

JSで作る

ディレクトリ構成
~/develop/docker/playwright_docker$ tree
.
├── Dockerfile
└── script.js

1 directory, 2 files
Dockerfile
# ベースとなるDockerイメージを指定
FROM mcr.microsoft.com/playwright:focal

# ワーキングディレクトリを設定
WORKDIR /app

# 必要なパッケージをインストール
RUN npm init -y
RUN npm install playwright

# スクリプトをコピー
COPY script.js /app/script.js

# コンテナ起動時に実行するコマンドを設定
CMD ["node", "script.js"]

script.js
const { chromium } = require('playwright');

(async () => {
//   const browser = await chromium.launch({headless: false});
  const browser = await chromium.launch({headless: true});
  const context = await browser.newContext();
  const page = await context.newPage();
  await page.goto('https://www.google.com');
  const title = await page.title();
  console.log(title);
  await browser.close();
})();

イメージ作成
docker build -t my-playwright-app .
実行結果
~/develop/docker/playwright_docker$ docker run my-playwright-app       
Google

TypeScriptで作る

Dockerfile
# ベースとなるDockerイメージを指定
FROM mcr.microsoft.com/playwright:focal

# ワーキングディレクトリを設定
WORKDIR /app

# 必要なパッケージをインストール
RUN npm init -y
RUN npm install playwright typescript ts-node

# スクリプトをコピー
COPY script.ts /app/script.ts

# コンテナ起動時に実行するコマンドを設定
CMD ["npx", "ts-node", "script.ts"]

script.ts
import { chromium } from 'playwright';

(async () => {
  const browser = await chromium.launch({ headless: true });
  const context = await browser.newContext();
  const page = await context.newPage();
  await page.goto('https://www.google.com');
  const title = await page.title();
  console.log(title);
  await browser.close();
})();

→GUIを表示するのは追加で設定が必要なようだ。

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