fix: CI browser/karma

[danisharora099]

Problem

Problem

Browser tests in CI are failing due to Chrome sandbox issues in the container environment. The specific error indicates that the sandbox cannot be initialized in the Ubuntu environment:

No usable sandbox! If you are running on Ubuntu 23.10+ or another Linux distro that has disabled unprivileged user namespaces with AppArmor

Additionally, Firefox tests were potentially affected by container permission issues due to missing HOME directory configuration.

Solution

1. Updated the CI workflow to properly configure the container environment:

   • Added HOME environment variable to fix Firefox container permissions
   • Using the same container configuration as the successful Playwright tests

2. Modified Karma configuration to use CI-specific Chrome launcher with appropriate sandbox flags:

   • Added ChromeHeadlessCI configuration with necessary flags
   • Configured browser selection to use CI-specific launchers when in CI environment

Notes

• Resolves bug: browser tests fail in CI #2205
• Related to [BUG] Running Nightly as root in a regular user's session is not supported. microsoft/playwright#6500 [firefox only]

Contribution checklist:

• covered by unit tests (existing browser tests now pass)
• covered by e2e test (existing Playwright tests continue to pass)
• add ! in title if breaks public API (not needed - internal CI change only)

[github-actions]

size-limit report 📦

Path	Size	Loading time (3g)	Running time (snapdragon)	Total time
Waku node	86.63 KB (0%)	1.8 s (0%)	2.5 s (-6.86% 🔽)	4.2 s
Waku Simple Light Node	136.82 KB (0%)	2.8 s (0%)	2.6 s (-13.23% 🔽)	5.3 s
ECIES encryption	22.88 KB (0%)	458 ms (0%)	724 ms (+44.31% 🔺)	1.2 s
Symmetric encryption	22.37 KB (0%)	448 ms (0%)	1.2 s (+33.64% 🔺)	1.6 s
DNS discovery	70.54 KB (0%)	1.5 s (0%)	2.1 s (+39.59% 🔺)	3.5 s
Peer Exchange discovery	71.82 KB (0%)	1.5 s (0%)	1.5 s (-21.24% 🔽)	2.9 s
Local Peer Cache Discovery	65.17 KB (0%)	1.4 s (0%)	2.1 s (-1.71% 🔽)	3.4 s
Privacy preserving protocols	76.16 KB (0%)	1.6 s (0%)	2 s (+2.87% 🔺)	3.5 s
Waku Filter	80.98 KB (0%)	1.7 s (0%)	2.7 s (+75.81% 🔺)	4.3 s
Waku LightPush	75.72 KB (0%)	1.6 s (0%)	1.9 s (-8.26% 🔽)	3.4 s
History retrieval protocols	77.63 KB (0%)	1.6 s (0%)	2.3 s (+21.69% 🔺)	3.8 s
Deterministic Message Hashing	7.39 KB (0%)	148 ms (0%)	435 ms (-21.29% 🔽)	583 ms

[weboko]

nit: these lines actually do not change anything

[weboko]

nice!