Instead of disabling shared memory usage, mount a proper tmpfs at
/dev/shm so Antigravity (and Chrome) have real shared memory available.
Removes --disable-dev-shm-usage; keeps --no-sandbox (separate issue).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Electron apps crash in Docker without --no-sandbox and
--disable-dev-shm-usage, same as Chrome. VSCode handles this
internally; Antigravity does not.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>