Here you can find a very basic example how to use docker swarm config and healthcheck feature.

Setup

Build image

docker build -t pyhello .

Run image in a single host mode

docker run -t -p 8000:8000 pyhello:latest

Open your browser at http://localhost:8000 You should see Hello world!

Init swarm

docker swarm init

Deploy stack

 docker stack deploy --compose-file compose/stack-compose.yaml pyhello

Open your browser at http://localhost:8000 You should see Hello Swarm Config! sourced from the swarm config file.