Try to be more efficient on CI

Author: rix0rrr

build.sh

@@ -47,6 +47,10 @@ done
 
 export NODE_OPTIONS="--max-old-space-size=8196 --experimental-worker ${NODE_OPTIONS:-}"
 
+if $ci; then
+  export CI=true
+fi
+
 # Temporary log memory for long builds (this may mess with tests that check stderr)
 # export NODE_OPTIONS="-r $PWD/scripts/log-memory.js ${NODE_OPTIONS:-}"