Configures Prometheus with bind mounts

Updates Prometheus to use bind mounts for configuration.
This simplifies configuration management and makes it consistent with other services.
Adds grafana ini to provisioning folder

Author: bogdan-ts

docker-compose.coolify.yml

@@ -16,10 +16,6 @@ services:
       echo '' >> /app/config/pgwatch-prometheus/sources.yml &&
       sed 's/~sink_type~/prometheus/g' /app/instances.yaml >> /app/config/pgwatch-prometheus/sources.yml &&
       echo 'Generated sources.yml files for both postgres and prometheus'
-
-      # --- PROMETHEUS CONFIG: always ensure it's a FILE, not a dir ---
-      rm -rf /app/config/prometheus/prometheus.yml &&
-      cat > /app/config/prometheus/prometheus.yml <<'YAML'
       "
 
   # Target Database - The PostgreSQL database being monitored
@@ -61,11 +57,13 @@ services:
   # Prometheus Sink - Storage for metrics in Prometheus format
   sink-prometheus:
     image: prom/prometheus:v3.4.2
-    container_name: sink-prometheus
     ports:
       - "59090:9090"
     volumes:
-      - ./config/prometheus:/etc/prometheus
+      - type: bind
+        source: ./config/prometheus/prometheus.yml
+        target: /etc/prometheus/prometheus.yml
+        read_only: true
       - prometheus_data:/prometheus
     command:
       - "--config.file=/etc/prometheus/prometheus.yml"
@@ -74,8 +72,6 @@ services:
       - "--web.console.templates=/etc/prometheus/consoles"
       - "--storage.tsdb.retention.time=200h"
       - "--web.enable-lifecycle"
-    depends_on:
-      - sources-generator
 
   # PGWatch Instance 1 - Monitoring service (Postgres sink)
   pgwatch-postgres:
@@ -132,6 +128,7 @@ services:
       - grafana_data:/var/lib/grafana
       - ./config/grafana/provisioning:/etc/grafana/provisioning
       - ./config/grafana/dashboards:/var/lib/grafana/dashboards
+      - ./config/grafana/provisioning/grafana.ini:/etc/grafana/grafana.ini
     depends_on:
       - sink-postgres
       - sink-prometheus