update Dockerfile

Dockerfile

@@ -1,12 +1,14 @@
-FROM        quay.io/prometheus/busybox:latest
+FROM        alpine:latest
 MAINTAINER  Sophos <[email protected]>
 
+WORKDIR /bin
 COPY bin/nginx-vts-exporter.tar.gz /bin/
-COPY docker-entrypoint.sh /bin/docker-entrypoint.sh
+RUN tar xf /bin/nginx-vts-exporter.tar.gz -C /bin/ && chmod +x /bin/nginx-vts-exporter
 
-ENV NGIX_HOST "http://localhost"
+ENV NGINX_HOST "http://localhost"
 ENV METRICS_ENDPOINT "/metrics"
 ENV METRICS_ADDR ":9913"
 ENV DEFAULT_METRICS_NS "nginx"
 
-ENTRYPOINT ["/bin/docker-entrypoint.sh"]
+ENTRYPOINT ["nginx-vts-exporter"]
+CMD -nginx.scrape_uri=$NGINX_STATUS/status/format/json -telemetry.address $METRICS_ADDR -telemetry.endpoint $METRICS_ENDPOINT -metrics.namespace $METRICS_NS