Add docker-compose with prometheus and grafana

tests/prometheus.yml

@@ -0,0 +1,40 @@
+version: '2.1'
+services:
+  onlyoffice-documentserver:
+    container_name: onlyoffice-documentserver
+    build:
+      context: ../.
+    depends_on:
+      - onlyoffice-statsd-exporter
+    environment:
+      - METRICS_ENABLED=${METRICS_ENABLED:-true}
+      - METRICS_HOST=${METRICS_HOST:-onlyoffice-statsd-exporter}
+      - METRICS_PORT=${METRICS_PORT:-9125}
+      - METRICS_PREFIX=${METRICS_PREFIX:-ds.}
+    stdin_open: true
+    restart: always
+    ports:
+      - '80:80'
+
+  onlyoffice-statsd-exporter:
+    container_name: onlyoffice-statsd-exporter
+    image: prom/statsd-exporter
+    ports:
+      - '9102:9102'
+      - '9125:9125/tcp'
+      - '9125:9125/udp'
+
+  onlyoffice-prometheus:
+    container_name: onlyoffice-prometheus
+    image: prom/prometheus
+    ports:
+      - '9090:9090'
+    volumes:
+      - ./prometheus/prometheus.yml:/etc/prometheus/prometheus.yml
+
+  grafana:
+    image: bitnami/grafana
+    ports:
+      - '3000:3000'
+    environment:
+      - 'GF_SECURITY_ADMIN_PASSWORD=admin'

tests/prometheus/prometheus.yml

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+scrape_configs:
+  - job_name: 'statsd'
+    scrape_interval: 30s
+    static_configs:
+      - targets:
+        - onlyoffice-statsd-exporter:9102