This is a containerized version of flamescope.
docker build --rm -t taion809/flamescope-build
You can pull down your perfomance samples locally and mount a volume to the container to visualize.
docker run \
--rm \
-e "FLAMESCOPE_STACK_DIR=samples" \
-p 5000:5000 \
-v `pwd`/samples/:/usr/src/app/samples \
taion809/flamescope-build