Enable patchright based execution (#93)

## Overview

Following up on #84.
Install and allow running against patchright instead of only playwright

## Testing

Build + ran both headful + headless images. Confirmed execution working
as expected with `curl`:

```sh
curl -sS http://localhost:444/playwright/execute \
  -H 'Content-Type: application/json' \
  -d '{"code":"await page.goto(\"https://example.com\"); return await page.title();"}'
{"result":"Example Domain","success":true}
```

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> Adds Patchright support across images and runtime, selectable via
PLAYWRIGHT_ENGINE, and tweaks headless Chromium flags.
> 
> - **Runtime**
> - Update `server/runtime/playwright-executor.ts` to dynamically select
`chromium` from `patchright` or `playwright-core` based on
`PLAYWRIGHT_ENGINE`.
> - **Images**
> - Install `patchright` globally alongside `playwright-core`,
`typescript`, and `tsx` in `images/chromium-headful/Dockerfile` and
`images/chromium-headless/image/Dockerfile`.
> - **Scripts**
> - Pass through `PLAYWRIGHT_ENGINE` env in
`images/chromium-headful/run-docker.sh` and
`images/chromium-headless/run-docker.sh`.
> - **Chromium Flags (Headless)**
> - Adjust defaults in `images/chromium-headless/image/wrapper.sh` by
removing several flags (e.g., `--disable-component-update`,
`--disable-default-apps`, `--disable-extensions`,
`--enable-automation`).
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
50d5bb3. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

Author: Sayan-

images/chromium-headful/Dockerfile

@@ -276,8 +276,8 @@ RUN set -eux; \
     ln -sf /usr/local/lib/node_modules/corepack/dist/corepack.js /usr/local/bin/corepack; \
     fi
 
-# Install TypeScript and Playwright globally
-RUN --mount=type=cache,target=/root/.npm,id=$CACHEIDPREFIX-npm npm install -g typescript playwright-core tsx
+# Install TypeScript, Playwright, Patchright globally
+RUN --mount=type=cache,target=/root/.npm,id=$CACHEIDPREFIX-npm npm install -g typescript playwright-core patchright tsx
 
 # setup desktop env & app
 ENV DISPLAY_NUM=1

images/chromium-headful/run-docker.sh

@@ -66,6 +66,10 @@ RUN_ARGS=(
   --mount type=bind,src="$FLAGS_FILE",dst=/chromium/flags,ro
 )
 
+if [[ -n "${PLAYWRIGHT_ENGINE:-}" ]]; then
+  RUN_ARGS+=( -e PLAYWRIGHT_ENGINE="$PLAYWRIGHT_ENGINE" )
+fi
+
 # WebRTC port mapping
 if [[ "${ENABLE_WEBRTC:-}" == "true" ]]; then
   echo "Running container with WebRTC"

images/chromium-headless/image/Dockerfile

@@ -179,8 +179,8 @@ RUN set -eux; \
     ln -sf /usr/local/lib/node_modules/corepack/dist/corepack.js /usr/local/bin/corepack; \
     fi
 
-# Install TypeScript and Playwright globally
-RUN --mount=type=cache,target=/root/.npm,id=$CACHEIDPREFIX-npm npm install -g typescript playwright-core tsx
+# Install TypeScript, Playwright, Patchright globally
+RUN --mount=type=cache,target=/root/.npm,id=$CACHEIDPREFIX-npm npm install -g typescript playwright-core patchright tsx
 
 ENV WITHDOCKER=true
 

images/chromium-headless/image/wrapper.sh

@@ -44,12 +44,9 @@ if [ -z "${CHROMIUM_FLAGS:-}" ]; then
     --disable-breakpad \
     --disable-client-side-phishing-detection \
     --disable-component-extensions-with-background-pages \
-    --disable-component-update \
     --disable-crash-reporter \
     --disable-crashpad \
-    --disable-default-apps \
     --disable-dev-shm-usage \
-    --disable-extensions \
     --disable-features=AcceptCHFrame,AutoExpandDetailsElement,AvoidUnnecessaryBeforeUnloadCheckSync,CertificateTransparencyComponentUpdater,DeferRendererTasksAfterInput,DestroyProfileOnBrowserClose,DialMediaRouteProvider,ExtensionManifestV2Disabled,GlobalMediaControls,HttpsUpgrades,ImprovedCookieControls,LazyFrameLoading,LensOverlay,MediaRouter,PaintHolding,ThirdPartyStoragePartitioning,Translate \
     --disable-field-trial-config \
     --disable-gcm-registration \
@@ -63,7 +60,6 @@ if [ -z "${CHROMIUM_FLAGS:-}" ]; then
     --disable-renderer-backgrounding \
     --disable-search-engine-choice-screen \
     --disable-software-rasterizer \
-    --enable-automation \
     --enable-use-zoom-for-dsf=false \
     --export-tagged-pdf \
     --force-color-profile=srgb \

images/chromium-headless/run-docker.sh

@@ -19,6 +19,10 @@ RUN_ARGS=(
   -v "$HOST_RECORDINGS_DIR:/recordings"
 )
 
+if [[ -n "${PLAYWRIGHT_ENGINE:-}" ]]; then
+  RUN_ARGS+=( -e PLAYWRIGHT_ENGINE="$PLAYWRIGHT_ENGINE" )
+fi
+
 # If a positional argument is given, use it as the entrypoint
 ENTRYPOINT_ARG=()
 if [[ $# -ge 1 && -n "$1" ]]; then

server/runtime/playwright-executor.ts

@@ -1,5 +1,6 @@
 import { readFileSync } from 'fs';
-import { chromium } from 'playwright-core';
+import { chromium as chromiumPW } from 'playwright-core';
+import { chromium as chromiumPR } from 'patchright';
 
 async function main() {
   const codeFilePath = process.argv[2];
@@ -24,6 +25,8 @@ async function main() {
   let result;
 
   try {
+    const chromium = process.env.PLAYWRIGHT_ENGINE === 'patchright' ? chromiumPR : chromiumPW;
+
     browser = await chromium.connectOverCDP('ws://127.0.0.1:9222');
     const contexts = browser.contexts();
     const context = contexts.length > 0 ? contexts[0] : await browser.newContext();