Service Discovery and Reverse Proxy for Docker-based Microservices using Traefik

docker-compose.traefik.demo.yml

version: '3'

services:
    reverse-proxy:
        # The official v2 Traefik docker image
        image: traefik:v2.1
        # Enables the web UI and tells Traefik to listen to docker
        command: 
            - --api.insecure=true
            - --api.dashboard=true # <== Enabling the dashboard to view services, middlewares, routers, etc...
            - --api.debug=true # <== Enabling additional endpoints for debugging and profiling
            - --log.level=DEBUG # <== Setting the level of the logs from traefik
            - --providers.docker=true # <== Enabling docker as the provider for traefik
            - --providers.docker.network=bots # <== Operate on the docker network named web
            - --providers.docker.exposedbydefault=false # <== Don't expose every container to traefik, only expose enabled ones
        ports:
            # The HTTP port
            - "80:80"
            # The Web UI (enabled by --api.insecure=true)
            - "8080:8080"
        volumes:
            # So that Traefik can listen to the Docker events
            - /var/run/docker.sock:/var/run/docker.sock
        networks:
            - bots # <== Placing traefik on the network named bots, to access containers on this network

    whoami:
        # A container that exposes an API to show its IP address
        image: containous/whoami
        labels:
            - "traefik.enable=true" # <== Enable traefik on itself to view dashboard and assign subdomain to view it
            - "traefik.http.services.whoami.loadbalancer.server.port=80"
            - "traefik.http.routers.whoami.rule=PathPrefix(`/bots/whoami`)"
        networks:
            - bots # <== Placing traefik on the network named bots, to access containers on this network

networks:
    bots:
        external: true