wow a lot of changes happend since I set this up in October. I locked down the Prometheus version to 0.16.1, fixed the docker-compose to align the new config commands, and updated the prometheus.yml format to the new standard.

prom/prometheus.yml

@@ -14,7 +14,7 @@ rule_files:
   # - "first.rules"
   # - "second.rules"
 
-# A scrape configuration containing exactly one endpoint to scrape: 
+# A scrape configuration containing exactly one endpoint to scrape:
 # Here it's Prometheus itself.
 scrape_configs:
   # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.