feat(docker): prometheus integration with docker compose

docker-compose.yml

@@ -15,5 +15,29 @@ services:
       # Persistent SQLite database.
       - pulse-data:/app/data
 
+  prometheus:
+    image: prom/prometheus:v3.0.1
+    container_name: prometheus
+    restart: unless-stopped
+
+    command:
+      - "--config.file=/etc/prometheus/prometheus.yml"
+      - "--storage.tsdb.path=/prometheus"
+
+    ports:
+      - "9090:9090"
+
+    volumes:
+      # Prometheus scrape configuration.
+      # SELinux relabeling for Fedora/RHEL hosts.
+      - ./prometheus.yml:/etc/prometheus/prometheus.yml:ro,z
+
+      # Persistent Prometheus TSDB storage.
+      - prometheus-data:/prometheus
+
+    depends_on:
+      - pulse
+
 volumes:
   pulse-data:
+  prometheus-data:

prometheus.yml

@@ -0,0 +1,9 @@
+global:
+  scrape_interval: 15s
+  scrape_timeout: 10s
+
+scrape_configs:
+  - job_name: "pulse"
+    metrics_path: "/metrics"
+    static_configs:
+      - targets: ["pulse:8080"]