add drone scrape config to prometheus

docker-compose.yml

@@ -5,6 +5,8 @@ services:
     image: alpine
     volumes:
       - lgtm-config:/lgtm-config
+    environment:
+      DRONE_API_KEY: ${DRONE_API_KEY}
     command:
       - /bin/sh
       - -c
@@ -14,6 +16,7 @@ services:
         cd /lgtm-config
         if [ -d "lgtm-stack" ]; then rm -rf lgtm-stack; fi
         git clone "https://dev-gitea.sinetcon.com/pglaum/lgtm-stack"
+        echo "$DRONE_API_KEY" > /lgtm-config/lgtm-stack/drone-api.key
 
   jaeger:
     image: jaegertracing/all-in-one:latest

prometheus.yaml

@@ -7,6 +7,14 @@ scrape_configs:
     static_configs:
       - targets:
         - "traefik:8080"
+  - job_name: 'drone'
+    metrics_path: /metrics
+    static_configs:
+      - targets:
+        - "drone:80"
+    authorization:
+      type: Bearer
+      credentials_file: /lgtm-config/lgtm-stack/drone-api.key
   #  - job_name: node_exporter
   #    static_configs:
   #      - targets: