feat(docker-compose): enhance Grafana configuration

Added provisioning configuration for datasources including Prometheus, Loki, and Jaeger. Enabled anonymous access, simplified alert routing, and introduced custom Grafana startup script to streamline setup. This improves Grafana's usability and integration with monitoring tools.

Author: nickreynke

docker-compose.yml

@@ -52,10 +52,50 @@ services:
 
   grafana:
     image: grafana/grafana:latest
-    environment:
-      - GF_SECURITY_ADMIN_PASSWORD=admin
     ports:
       - "3000:3000"
+    environment:
+      - GF_SECURITY_ADMIN_PASSWORD=admin
+      - GF_PATHS_PROVISIONING=/etc/grafana/provisioning
+      - GF_AUTH_ANONYMOUS_ENABLED=true
+      - GF_AUTH_ANONYMOUS_ORG_ROLE=Admin
+      - GF_FEATURE_TOGGLES_ENABLE=alertingSimplifiedRouting,alertingQueryAndExpressionsStepMode
+    entrypoint:
+      - sh
+      - -euc
+      - |
+        mkdir -p /etc/grafana/provisioning/datasources
+        cat <<EOF > /etc/grafana/provisioning/datasources/ds.yaml
+        apiVersion: 1
+        datasources:
+        - name: Prometheus
+          type: prometheus
+          orgId: 1
+          url: http://prometheus:9090
+          basicAuth: false
+          isDefault: true
+          version: 1
+          editable: false
+        - name: Loki
+          type: loki
+          access: proxy
+          orgId: 1
+          url: http://loki:3100
+          basicAuth: false
+          isDefault: false
+          version: 1
+          editable: false
+        - name: Jaeger
+          type: jaeger
+          access: proxy
+          orgId: 1
+          url: http://jaeger:16686
+          basicAuth: false
+          isDefault: false
+          version: 1
+          editable: false
+        EOF
+        /run.sh
     networks:
       - otel-net
     depends_on: