Updated README

README.md

@@ -25,5 +25,95 @@ curl -o prom-exporter.exe https://github.com/MGSousa/prom-exporter/releases/down
 ```
 
 ## Usage
+ - About args
 ```sh
-./prom-exporter -service-uri "REMOTE_HOST:PORT"-service-name "SERVICE_NAME" -service-metrics-path "REMOTE_PATH"
+Usage of ./prom-exporter:
+  -debug
+    	Enable debug mode.
+  -listen-address string
+    	Address to listen on to be scraped. (default ":19100")
+  -service-metrics-path string
+    	Service path to scrape metrics from. (default "metrics")
+  -service-name string
+    	Remote service name to reference.
+  -service-port string
+    	HTTP Port of the remote service. (default "80")
+  -service-protocol string
+    	HTTP Schema of the remote service (http or https). (default "http")
+  -service-uri string
+    	Endpoint address of the remote service.
+  -service-version-scrape
+    	Enable whether the service will be internally scraped for fetching remote build version or not.
+  -telemetry-path string
+    	Base path under which to expose metrics. (default "/metrics")
+```
+
+ - Run it via docker compose / swarm
+### filebeat.yaml
+```yaml
+fields_under_root: true
+filebeat.autodiscover.providers:
+   - type: docker
+     templates:
+       - condition.and:
+          - not.contains:
+              docker.container.labels.name: "filebeat"
+         config:
+           - type: container
+             paths:
+               - "/var/lib/docker/containers/${data.docker.container.id}/*.log"
+processors:
+  - add_docker_metadata:
+      host: "unix:///var/run/docker.sock"
+output.console:
+  pretty: true
+logging:
+  level: "info"
+  metrics.enabled: false
+http:
+  enabled: true
+  host: 0.0.0.0
+```
+### compose.yaml
+```yaml
+# configuration example
+
+networks:
+  filebeat:
+    external: true
+
+services:
+  filebeat:
+    hostname: &filebeat_endpoint "CUSTOM_HOSTNAME"
+    container_name: filebeat
+    image: docker.elastic.co/beats/filebeat:8.11.1
+    command: -environment container
+    user: root
+    volumes:
+      - ${PWD}/filebeat.yml:/usr/share/filebeat/filebeat.yml:ro
+      - /var/lib/docker:/var/lib/docker:ro
+      - /var/run/docker.sock:/var/run/docker.sock
+    networks:
+      - filebeat
+  exporter:
+    container_name: filebeat_exporter
+    image: filebeat-exporter:latest
+    command: |
+      -listen-address ":9201"
+      -service-name "filebeat"
+      -service-port "5066"
+      -service-metrics-path "stats"
+    environment:
+      SERVICE_ENDPOINT: *filebeat_endpoint
+    networks:
+      - filebeat
+    ports:
+      - '9201:9201'
+```
+ - Run it via executable
+```sh
+./prom-exporter -service-name "SERVICE_NAME" -service-uri "REMOTE_HOST" -service-port REMOTE_PORT -service-metrics-path "REMOTE_PATH"
+```
+
+## TODO
+[] Set desired metrics with custom ValueType (Gauge, Histogram, Counter, etc.) via mapping