Add prometheus config

deployments/docker/app/Dockerfile

@@ -1,5 +1,6 @@
 FROM alpine
 EXPOSE 8080
+EXPOSE 2112
 
 # Needed by updater to connect to github
 RUN apk --update upgrade && \

deployments/docker/prometheus/prometheus.yml

@@ -0,0 +1,19 @@
+global:
+  scrape_interval: 15s
+
+  # Attach these labels to any time series or alerts when communicating with
+  # external systems (federation, remote storage, Alertmanager).
+  external_labels:
+    monitor: 'codelab-monitor'
+
+scrape_configs:
+  # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
+  - job_name: 'prometheus'
+    scrape_interval: 5s
+    static_configs:
+      - targets: ['localhost:9090']
+
+  - job_name: 'app'
+    scrape_interval: 1s
+    static_configs:
+      - targets: ['app:2112']

docker-compose.yml

@@ -62,7 +62,7 @@ services:
   app:
     image: lbry/lbrytv:latest-dev
     ports:
-      - "8080:8080"
+      - 8080:8080
     volumes:
     - type: bind
       source: storage
@@ -72,6 +72,12 @@ services:
       LW_LBRYNET: http://lbrynet:5279/
     depends_on:
       - lbrynet
+  prometheus:
+    image: prom/prometheus:latest
+    ports:
+      - 9090:9090
+    volumes:
+      - ${PWD}/deployments/docker/prometheus/prometheus.yml:/etc/prometheus/prometheus.yml
 
 volumes:
   storage: