Updated Docker Compose (markdown)

Docker-Compose.md

@@ -8,7 +8,7 @@ This page includes multiple docker-compose.yml setups for you to run. There are
   - [Nginx as proxy pass](#nginx-proxy-pass)
   - [Nginx with LetEncrypt SSL Cert](#nginx-proxy-pass-with-ssl-letencrypt)
 ### Metrics
- - Grafana with Prometheus
+ - [Grafana with Prometheus](#grafana-dashboard-with-prometheus)
 ---
 
 # Docker Volumes
@@ -174,3 +174,67 @@ nginx-ssl:
     DEFAULT_EMAIL: info@mydomain.com
     NGINX_PROXY_CONTAINER: nginx
 ```
+
+# Grafana Dashboard with Prometheus
+Grafana is an awesome metric visualizer that allows you to create some awesome dashboards. We've already created a [Grafana Dashboard](https://grafana.com/grafana/dashboards/6950) that you can easy import! Checkout the [Grafana Wiki](https://github.com/hunterlong/statping/wiki/Prometheus-Exporter) and the [Prometheus Exporter Wiki](https://github.com/hunterlong/statping/wiki/Prometheus-Exporter) for more details.
+
+##### `prometheus.yml` config file
+This file should be mounted to `/etc/prometheus/prometheus.yml` in the Prometheus container.
+```yaml
+global:
+  scrape_interval:     30s
+  evaluation_interval: 30s
+
+scrape_configs:
+  - job_name: 'statping'
+    scrape_interval: 30s
+    bearer_token: 'SECRET API KEY HERE'
+    static_configs:
+      - targets: ['statping:8080']
+```
+> Be sure to replace `SECRET API KEY HERE` with your API Secret on the Settings page.
+
+##### `docker-compose.yml` file for Statping, Grafana and Prometheus
+```yaml
+statping:
+  container_name: statping
+  image: hunterlong/statping
+  restart: always
+  volumes:
+    - statping_data:/app
+  environment:
+    DB_CONN: sqlite
+    LETSENCRYPT_HOST: demo.statping.com
+    VIRTUAL_HOST: demo.statping.com
+    VIRTUAL_PORT: 8080
+
+prometheus:
+  container_name: prometheus
+  image: prom/prometheus:v2.0.0
+  restart: always
+  ports:
+    - 9090:9090
+  volumes:
+    - prometheus.yml:/etc/prometheus/prometheus.yml # config file is above ^
+    - prometheus_data:/prometheus
+  links:
+    - statping
+  depends_on:
+    - statping
+
+grafana:
+  container_name: grafana
+  image: grafana/grafana
+  restart: always
+  ports:
+    - 3000:3000
+  volumes:
+    - grafana_data:/var/lib/grafana
+  environment:
+    - GF_SECURITY_ADMIN_PASSWORD=password123
+    - GF_USERS_ALLOW_SIGN_UP=false
+  depends_on:
+    - prometheus
+  links:
+    - prometheus
+```