Github user greghogan commented on a diff in the pull request:
https://github.com/apache/flink/pull/3086#discussion_r95381935
--- Diff: flink-contrib/docker-flink/Dockerfile ---
@@ -22,9 +22,9 @@ FROM java:8-jre-alpine
RUN apk add --no-cache bash snappy
# Configure Flink version
-ENV FLINK_VERSION=1.1.1
-ENV HADOOP_VERSION=27
-ENV SCALA_VERSION=2.11
+ARG FLINK_VERSION=1.1.3
--- End diff --
6e1e139 includes the note "replace ARG with ENV for
backwards-compatibility".
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