Devcontainer: fix "Cannot start ChromeHeadless" error when running tests #10137
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Type of change
Description of change
Hacky fix to allow running the test suite in devcontainer.
karma.conf.maker.js uses is-docker npm plugin to add the
--no-sandbox
chrome flag when in docker, but the plugin does not work in devcontainers.The proposed simple fix is to create
/.dockerenv
for now, one of the things is-docker looks for.Adding
"securityOpt": ["seccomp=unconfined"]
to devcontainer would also work by raising its privileges so the flag isn't needed, but is less secure.Eventually the test in karma.conf.maker.js should be updated to use something else, requires further discussion to cover all the previous use cases.
Other information
Resolves #10066