add prometheus to docker-compose

* include basic configuration file

docker-compose.yml

@@ -78,3 +78,12 @@ services:
       - proxy-tier
     depends_on:
       - proxy
+
+  prometheus:
+    image: prom/prometheus
+    container_name: prometheus
+    ports:
+      - 127.0.0.1:9090:9090
+    volumes:
+      - ./prometheus.yml:/etc/prometheus/prometheus.yml
+

prometheus.yml

+# my global config
+global:
+  scrape_interval:     15s
+  evaluation_interval: 15s
+
+# Alertmanager configuration
+alerting:
+  alertmanagers:
+  - static_configs:
+    - targets:
+      # - alertmanager:9093
+
+# Load rules once and periodically evaluate them according to the global 'evaluation_interval'.
+rule_files:
+  # - "first_rules.yml"
+  # - "second_rules.yml"
+
+# A scrape configuration containing exactly one endpoint to scrape:
+# Here it's Prometheus itself.
+scrape_configs:
+  # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
+  - job_name: 'prometheus'
+
+    # metrics_path defaults to '/metrics'
+    # scheme defaults to 'http'.
+
+    static_configs:
+    - targets: ['localhost:9090']