config.toml

defaultEntryPoints = ["http"]

[entryPoints]
  [entryPoints.http]
    address = ":8080"
    compress = true

[file]
  watch = true

[backends]
  [backends.backend1]
  [backends.backend1.servers.server1]
    url = "http://web:8000"

[frontends]
  [frontends.frontend1]
    backend = "backend1"
    [frontends.frontend1.routes.example]
      rule = "Host:localhost"

docker-compose.yml

version: "3"
services:

  web:
    image: overbryd/sample-sse-backend
    ports:
    - "8000:8000"

  traefik:
    image: traefik:1.7.3
    ports:
    - "8080:8080"
    command:
    - traefik
    - -c
    - /conf/config.toml
    volumes:
    - .:/conf

Dockerfile

FROM golang:1.9-alpine

WORKDIR /app

RUN apk add --no-cache git \
  && git clone https://github.com/amenezes/golang-html5-sse-example .

VOLUME /app

EXPOSE 8080

CMD ["run", "./server.go"]
ENTRYPOINT ["/usr/local/go/bin/go"]