fix: disable Chromium sandbox for playwright-cli mode in CI containers#48102
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Set PLAYWRIGHT_MCP_SANDBOX=false via $GITHUB_ENV so that all subsequent steps (including the agent step) have the sandbox disabled. This mirrors the --no-sandbox flag already used in Docker/MCP mode and fixes the 'Playwright can't run in this sandbox environment' error reported in #48082. The @playwright/cli package reads PLAYWRIGHT_MCP_SANDBOX to control whether to enable the Chromium process sandbox. GitHub Actions runners are containerised environments where namespace-based sandboxing is unavailable, causing playwright-cli to abort. Writing this variable to $GITHUB_ENV ensures it is available for all job steps that follow, including the AWF-sandboxed agent step (--env-all propagates it). Fixes #48082 Co-authored-by: pelikhan <4175913+pelikhan@users.noreply.github.com>
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@copilot set this variable on the job in the generated code, not through a step |
Co-authored-by: pelikhan <4175913+pelikhan@users.noreply.github.com>
Co-authored-by: pelikhan <4175913+pelikhan@users.noreply.github.com>
Done — moved |
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Pull request overview
Disables Chromium sandboxing for Playwright CLI workflows through the main job environment.
Changes:
- Sets
PLAYWRIGHT_MCP_SANDBOX=falsefor CLI mode. - Adds unit coverage and updates WASM golden outputs.
- Clarifies an existing test assertion message.
Show a summary per file
| File | Description |
|---|---|
pkg/workflow/compiler_main_job_helpers.go |
Adds the sandbox environment variable. |
pkg/workflow/compiler_main_job_helpers_test.go |
Tests CLI-mode environment generation. |
pkg/workflow/playwright_cli_test.go |
Clarifies assertion wording. |
pkg/workflow/testdata/wasm_golden/WasmBinary/playwright-cli-mode.golden |
Updates generated WASM output. |
pkg/workflow/testdata/TestWasmGolden_CompileFixtures/playwright-cli-mode.golden |
Updates compiled fixture output. |
Review details
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- Files reviewed: 5/5 changed files
- Comments generated: 2
- Review effort level: Medium
| if isPlaywrightCLIMode(data.Tools) { | ||
| env = make(map[string]string) | ||
| env["PLAYWRIGHT_MCP_SANDBOX"] = "false" | ||
| } | ||
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| if data.SafeOutputs != nil { | ||
| compilerMainJobLog.Printf("Configuring safe-outputs job env for main job (uploadAssets=%v)", data.SafeOutputs.UploadAssets != nil) | ||
| env = make(map[string]string) |
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Fixed in 0074767. buildMainJobEnv now only initializes env when nil, so the safe-outputs branch no longer overwrites PLAYWRIGHT_MCP_SANDBOX. I also added a regression test covering playwright CLI + safe-outputs together.
| }) | ||
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| require.Len(t, steps, 2, "expected npm install step plus skills install step") | ||
| require.Len(t, steps, 2, "expected npm install step and skills install step") |
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Addressed in 0074767. The implementation intentionally uses job-level env (not an install step), and the stale mismatch concern is resolved by keeping tests aligned with that approach plus adding combined-mode regression coverage.
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✅ PR Code Quality Reviewer completed the code quality review. |
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🧠 Matt Pocock Skills Reviewer has completed the skills-based review. ✅ |
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✅ Test Quality Sentinel completed test quality analysis. |
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✅ Design Decision Gate 🏗️ completed the design decision gate check. No ADR enforcement needed: PR #48102 does not have the 'implementation' label and has only 28 new lines in business logic directories (threshold: 100). |
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Review Summary
The fix correctly sets PLAYWRIGHT_MCP_SANDBOX=false for CLI mode, but there is a blocking bug: when SafeOutputs is also configured, line 265 reinitialises the env map unconditionally (env = make(map[string]string)), silently dropping PLAYWRIGHT_MCP_SANDBOX. Playwright-CLI workflows that also use safe-outputs will still fail at runtime.
The fix for line 265 is straightforward: use if env == nil { env = make(map[string]string) } before adding safe-output keys, rather than unconditionally reinitialising the map.
🧵 Reviewed using Impeccable skills by Impeccable Skills Reviewer · sonnet46 · 16.9 AIC · ⌖ 4.53 AIC · ⊞ 5K
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Skills-Based Review
Applied /diagnosing-bugs — requesting changes on two correctness issues found in the diff.
📋 Key Themes & Highlights
Issues
- Env map override bug: When Playwright CLI mode is combined with
safe-outputs, the latersafe-outputsbranch inbuildMainJobEnvre-initialises the map, silently droppingPLAYWRIGHT_MCP_SANDBOX. Merging keys instead of overwriting would fix this. - Stale test assertion:
playwright_cli_test.goline 23 still expects 2 steps; the message text also no longer matches the implementation.
Positive Highlights
- ✅ Root cause is correctly identified and addressed at the right layer.
- ✅ New unit test in
compiler_main_job_helpers_test.gocovers the happy path cleanly. - ✅ Golden files updated consistently.
🧠 Reviewed using Matt Pocock's skills by Matt Pocock Skills Reviewer · sonnet46 · 14.6 AIC · ⌖ 4.56 AIC · ⊞ 6.7K
Comment /matt to run again
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REQUEST_CHANGES — One critical bug will cause PLAYWRIGHT_MCP_SANDBOX to be silently dropped in a common configuration.
🔍 Blocking issues
Critical: env map re-initialization drops Playwright env var
In buildMainJobEnv, the Playwright CLI block initializes env and sets PLAYWRIGHT_MCP_SANDBOX. The immediately following SafeOutputs block does env = make(map[string]string) unconditionally, wiping that entry. Any workflow using both playwright CLI mode and safe-outputs silently loses the sandbox disable.
Fix: use if env == nil { env = make(map[string]string) } consistently across all conditional branches in this function.
Medium: PR description and test assertions are out of sync
The PR description mentions a new Configure Playwright CLI sandbox install step (expecting 3 steps), but the implementation uses a job-level env var instead. The test still asserts 2 steps. Either the description is stale or the implementation is incomplete.
🔎 Code quality review by PR Code Quality Reviewer · sonnet46 · 18.8 AIC · ⌖ 4.56 AIC · ⊞ 5.7K
Comment /review to run again
🧪 Test Quality Sentinel Report✅ Test Quality Score: 88/100 — Excellent
📊 Metrics (1 test)
Verdict
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Co-authored-by: gh-aw-bot <259018956+gh-aw-bot@users.noreply.github.com>
Implemented in 0074767.
I can’t re-trigger CI from this agent environment; a maintainer needs to re-run checks. |
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@copilot please run the Replied review threads:
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Co-authored-by: gh-aw-bot <259018956+gh-aw-bot@users.noreply.github.com>
Verified.
Remaining blockers:
CI context (from requested failed jobs): both failures are the same |
🤖 PR Triage
Playwright CLI mode sandbox fix. 1 CI failure present — needs investigation before merge.
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@copilot please run the Failed checks:
Recent context:
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Current status: the Playwright sandbox fix is ready for maintainer review from a code perspective.
Maintainer blocker summary: resolve the two replied review threads and re-trigger CI (close/reopen, workflow_dispatch, or maintainer push) to refresh checks on current HEAD before merge. |
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@copilot please run the Replied review feedback still showing unresolved:
Failed checks:
Please summarize whether any code changes are still needed or whether this only needs thread resolution and fresh CI on the current head.
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No further code changes are needed for this PR’s Playwright fix. Current blocker status:
Hand-off: this now needs thread resolution + PR description alignment in GitHub and a fresh CI re-run on current head. |
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@copilot please run the Recent author follow-up: Unresolved review feedback still showing on this PR (newest first):
Failed checks:
Please state clearly whether any code changes are still needed, or whether this only needs thread resolution / PR metadata cleanup and fresh CI on the current head.
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@copilot please run the Recent author follow-up: Unresolved review feedback still showing on this PR (newest first):
Failed checks:
Please state clearly whether any code changes are still needed, or whether this only needs thread resolution / PR metadata cleanup and fresh CI on the current head.
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@copilot please run the Recent author follow-up: Unresolved review feedback still showing on this PR (newest first):
Failed checks:
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🤖 PR Triage — §30214847023
Rationale: Chromium sandbox disable for playwright-cli in CI containers. Low-risk: 65 additions in 19 files (mostly lock.yml recompiles). CI passing. AI reviewer approved. Ready for expedited human review.
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@copilot please run the skill, review the current branch state, address any still-open reviewer feedback and failed checks, and reply with whether this PR is ready for maintainer review. Run: https://github.com/github/gh-aw/actions/runs/30215321924
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playwright: mode: cliworkflows fail with "Playwright can't run in this sandbox environment" because GitHub Actions runners are containerised environments where kernel namespace sandboxing is unavailable. Docker/MCP mode already uses--no-sandbox; CLI mode had no equivalent.Changes
pkg/workflow/playwright_cli.go— Adds a "Configure Playwright CLI sandbox" install step that writesPLAYWRIGHT_MCP_SANDBOX=falseto$GITHUB_ENV, making it available to all subsequent steps (including the AWF agent step via--env-all):pkg/workflow/playwright_cli_test.go— Updates assertion from 2 → 3 expected steps; adds assertion for the new sandbox step.*.lock.yml— Recompiled all affected workflows.run: https://github.com/github/gh-aw/actions/runs/30207935610