DO NOT MERGE: jitpack based zipkin build

So, we should figure out how to cut images mostly for master, but
possibly for feature branches also. This is just a dockerfile edit, but
maybe helpful to start elaborating what something real might look like.

docker-compose-elasticsearch.yml

@@ -22,6 +22,7 @@ services:
       - STORAGE_TYPE=elasticsearch
       # Point the zipkin at the storage backend
       - ES_HOSTS=elasticsearch
+      - ES_HTTP_LOGGING=BASIC
       # Uncomment to see requests to and from elasticsearch
       # - ES_HTTP_LOGGING=BODY
 

docker-compose.yml

@@ -19,7 +19,7 @@ services:
   # The zipkin process services the UI, and also exposes a POST endpoint that
   # instrumentation can send trace data to. Scribe is disabled by default.
   zipkin:
-    image: openzipkin/zipkin
+    build: zipkin
     container_name: zipkin
     # Environment settings are defined here https://github.com/openzipkin/zipkin/blob/master/zipkin-server/README.md#environment-variables
     environment:

zipkin/Dockerfile

@@ -14,15 +14,15 @@
 
 FROM alpine
 
-ENV ZIPKIN_REPO https://repo1.maven.org/maven2
-ENV ZIPKIN_VERSION 2.15.0
+ENV USER anuraaga
+ENV BRANCH elasticsearch-armeria
 
 # Add environment settings for supported storage types
 COPY zipkin/ /zipkin/
 WORKDIR /zipkin
 
 RUN apk add unzip curl --no-cache && \
-    curl -SL $ZIPKIN_REPO/io/zipkin/zipkin-server/$ZIPKIN_VERSION/zipkin-server-$ZIPKIN_VERSION-exec.jar > zipkin-server.jar && \
+    curl -SL https://jitpack.io/com/github/$USER/zipkin/zipkin-server/$BRANCH-SNAPSHOT/zipkin-server-$BRANCH-SNAPSHOT-exec.jar > zipkin-server.jar && \
     # don't break when unzip finds an extra header https://github.com/openzipkin/zipkin/issues/1932
     unzip zipkin-server.jar ; \
     rm zipkin-server.jar && \