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Traefik

  traefik:
    image: traefik:v2.0
    restart: always
    container_name: traefik
    ports:
      - "80:80" # <== http
      - "8080:8080" # <== :8080 is where the dashboard runs on
      - "443:443" # <== https
    command:
    #### These are the CLI commands that will configure Traefik and tell it how to work! ####
      ## API Settings - https://docs.traefik.io/operations/api/, endpoints - https://docs.traefik.io/operations/api/#endpoints ##
      - --api=true # <== Enabling insecure api, NOT RECOMMENDED FOR PRODUCTION
      - --api.dashboard=true # <== Enabling the dashboard to view services, middlewares, routers, etc...
      - --api.debug=true # <== Enabling additional endpoints for debugging and profiling

      ## Log Settings (options: ERROR, DEBUG, PANIC, FATAL, WARN, INFO) - https://docs.traefik.io/observability/logs/ ##
      - --log.level=DEBUG # <== Setting the level of the logs from traefik

      ## Provider Settings - https://docs.traefik.io/providers/docker/#provider-configuration ##
      - --providers.docker=true # <== Enabling docker as the provider for traefik
      - --providers.docker.exposedbydefault=false # <== Don't expose every container to traefik, only expose enabled ones
      - --providers.file.filename=/dynamic.yml # <== Referring to a dynamic configuration file
      - --providers.docker.network=web # <== Operate on the docker network named web

      ## Entrypoints Settings - https://docs.traefik.io/routing/entrypoints/#configuration ##
      - --entrypoints.web.address=:80 # <== Defining an entrypoint for port :80 named web
      - --entrypoints.web-secured.address=:443 # <== Defining an entrypoint for https on port :443 named web-secured

      ## Certificate Settings (Let's Encrypt) -  https://docs.traefik.io/https/acme/#configuration-examples ##
      - --certificatesResolvers.mytlschallenge.acme.httpChallenge.entryPoint=web
      - --certificatesresolvers.mytlschallenge.acme.tlschallenge=true # <== Enable TLS-ALPN-01 to generate and renew ACME certs
      - --certificatesresolvers.mytlschallenge.acme.email=kevin@kevinsloan.net # <== Setting email for certs
      - --certificatesresolvers.mytlschallenge.acme.storage=/letsencrypt/acme.json # <== Defining acme file to store cert information

    volumes:
      - ./.letsencrypt:/letsencrypt # <== Volume for certs (TLS)
      - /var/run/docker.sock:/var/run/docker.sock # <== Volume for docker admin
      - ./dynamic.yml:/dynamic.yml # <== Volume for dynamic conf file, **ref: line 27

    networks:
      ## Placing traefik on the network named web, to access containers on this network
      web:
        ipv4_address: 172.18.0.2
      
    labels:
    #### Labels define the behavior and rules of the traefik proxy for this container ####
      - "traefik.enable=true" # <== Enable traefik on itself to view dashboard and assign subdomain to view it
      - "traefik.http.routers.traefik-web.rule=Host(`monitor.kevinsloan.net`)" # <== Setting the domain for the dashboard
      - "traefik.http.routers.traefik-web.entrypoints=web"
      - "traefik.http.routers.traefik-web.middlewares=redirect@file"
      - "traefik.http.routers.traefik-secured.rule=Host(`monitor.kevinsloan.net`)"
      - "traefik.http.routers.traefik-secured.entrypoints=web-secured"
      - "traefik.http.routers.traefik-secured.tls.certresolver=mytlschallenge"
      - "traefik.http.routers.traefik-secured.service=api@internal" # <== Enabling the api to be a service to access
      - "traefik.http.routers.traefik-secured.middlewares=test-auth@file"
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