playwright: cleanup build process (#12248)

The commit updates the `@theia/playwright` package to not install it's dependencies on startup
since we often do not run the tests manually but instead handles the package similarly to our examples where
they can built on demand. The change should improve the build process without irrelevant logs.

Signed-off-by: vince-fugnitto <[email protected]>

.github/workflows/playwright.yml

@@ -33,7 +33,7 @@ jobs:
         with:
           python-version: "3.x"
 
-      - name: Build
+      - name: Build Browser
         shell: bash
         run: |
           yarn --skip-integrity-check --network-timeout 100000
@@ -42,6 +42,11 @@ jobs:
           NODE_OPTIONS: --max_old_space_size=4096
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # https://github.com/microsoft/vscode-ripgrep/issues/9
 
+      - name: Build Playwright
+        shell: bash
+        run: |
+          yarn --cwd examples/playwright build
+
       - name: Test (playwright)
         uses: GabrielBB/xvfb-action@v1
         with:

examples/playwright/docs/DEVELOPING.md

@@ -3,6 +3,7 @@
 ## Building
 
 Run `yarn` in the root directory of the repository.
+In order to build Playwright and install dependencies (ex: chromium) run `yarn --cwd examples/playwright` at the root of the repository.
 
 ## Executing the tests
 

examples/playwright/package.json

@@ -12,7 +12,6 @@
   },
   "homepage": "https://github.com/eclipse-theia/theia",
   "scripts": {
-    "prepare": "yarn clean && yarn build",
     "clean": "rimraf lib *.tsbuildinfo",
     "build": "tsc --incremental && npx playwright install chromium",
     "theia:start": "rimraf .tmp.cfg && THEIA_CONFIG_DIR=$PWD/.tmp.cfg yarn --cwd ../browser start",