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fix: default playwright-cli to the chromium it ships #13

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Merged
ashwin153 merged 1 commit into from
Aug 5, 2026
+17 −2
Merged

fix: default playwright-cli to the chromium it ships #13

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6 changes: 6 additions & 0 deletions src/playwright/NOTES.md
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Expand Up @@ -21,3 +21,9 @@ downloaded.
They live in `/usr/local/share/ms-playwright` rather than Playwright's default `$HOME/.cache`, and
`PLAYWRIGHT_BROWSERS_PATH` is set through `containerEnv` to match. Nothing to configure, and it
keeps working when `HOME` is replaced at run time.

`PLAYWRIGHT_MCP_BROWSER=chromium` is set for the same reason. Left alone, `playwright-cli` opens the
branded `chrome` channel and looks for it at `/opt/google/chrome/chrome`, which nothing installs —
so `playwright-cli open` would fail with *"Chromium distribution 'chrome' is not found"* despite a
perfectly good Chromium sitting in the image. Callers can still override it per command with
`--browser`.
6 changes: 6 additions & 0 deletions src/playwright/README.md
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Expand Up @@ -41,6 +41,12 @@ They live in `/usr/local/share/ms-playwright` rather than Playwright's default `
`PLAYWRIGHT_BROWSERS_PATH` is set through `containerEnv` to match. Nothing to configure, and it
keeps working when `HOME` is replaced at run time.

`PLAYWRIGHT_MCP_BROWSER=chromium` is set for the same reason. Left alone, `playwright-cli` opens the
branded `chrome` channel and looks for it at `/opt/google/chrome/chrome`, which nothing installs —
so `playwright-cli open` would fail with *"Chromium distribution 'chrome' is not found"* despite a
perfectly good Chromium sitting in the image. Callers can still override it per command with
`--browser`.


---

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5 changes: 3 additions & 2 deletions src/playwright/devcontainer-feature.json
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@@ -1,6 +1,7 @@
{
"containerEnv": {
"PLAYWRIGHT_BROWSERS_PATH": "/usr/local/share/ms-playwright"
"PLAYWRIGHT_BROWSERS_PATH": "/usr/local/share/ms-playwright",
"PLAYWRIGHT_MCP_BROWSER": "chromium"
},
"description": "Installs the Playwright CLI and Chromium. Requires the node feature.",
"id": "playwright",
Expand All @@ -16,5 +17,5 @@
"type": "string"
}
},
"version": "1.0.0"
"version": "1.1.0"
}
2 changes: 2 additions & 0 deletions test/playwright/ubuntu.sh
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Expand Up @@ -6,6 +6,8 @@ source \
dev-container-features-test-lib
check 'check if playwright-cli exists' bash -c "command -v playwright-cli"
check 'check if the browsers path is exported' bash -c "test \"${PLAYWRIGHT_BROWSERS_PATH:-}\" = /usr/local/share/ms-playwright"
check 'check if the default browser is chromium' bash -c "test \"${PLAYWRIGHT_MCP_BROWSER:-}\" = chromium"
check 'check if chromium was downloaded' bash -c "ls /usr/local/share/ms-playwright | grep -q chromium"
check 'check if the browsers are readable by the remote user' bash -c "test -r /usr/local/share/ms-playwright && test -x /usr/local/share/ms-playwright"
check 'check if the browser opens with no --browser flag' bash -c "PLAYWRIGHT_CLI_SESSION=featuretest playwright-cli open && PLAYWRIGHT_CLI_SESSION=featuretest playwright-cli close"
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