docker-compose.yml

version: "3"
services:

# Core API services are pinned, HA is provided for functions.
    gateway:
        volumes:
            - "/var/run/docker.sock:/var/run/docker.sock"
        ports:
            - 8080:8080
        image: functions/gateway:0.5.6
        networks:
            - functions
        environment:
            dnsrr: "true"  # Temporarily use dnsrr in place of VIP while issue persists on PWD
        deploy:
            placement:
                constraints: [node.role == manager]
 
    prometheus:
        image: functions/prometheus-legacy:1.5.2 # Mirrors version 1.5.2 of quay.io/prometheus/prometheus:latest
        volumes:
            - ./prometheus/prometheus.yml:/etc/prometheus/prometheus.yml
            - ./prometheus/alert.rules:/etc/prometheus/alert.rules

        command: "-config.file=/etc/prometheus/prometheus.yml -storage.local.path=/prometheus -storage.local.memory-chunks=10000 --alertmanager.url=http://alertmanager:9093"
        ports:
            - 9090:9090
        depends_on:
            - gateway
            - alertmanager
        environment:
            no_proxy: "gateway"
        networks:
            - functions
        deploy:
            placement:
                constraints: [node.role == manager]

    alertmanager:
        image: quay.io/prometheus/alertmanager
        environment:
            no_proxy: "gateway"
        volumes:
            - ./prometheus/alertmanager.yml:/alertmanager.yml
        command:
            - '-config.file=/alertmanager.yml'
        networks:
            - functions
        ports:
            - 9093:9093
        deploy:
            placement:
                constraints: [node.role == manager]

    # Sample functions go here.

    # Service label of "function" allows functions to show up in UI on http://gateway:8080/
    webhookstash:
        image: functions/webhookstash:latest
        labels:
            function: "true"
        depends_on:
            - gateway
        networks:
            - functions
        environment:
            no_proxy: "gateway"
            https_proxy: $https_proxy

    # Pass a username as an argument to find how many images user has pushed to Docker Hub.