Github user jeking3 commented on a diff in the pull request:
https://github.com/apache/thrift/pull/1382#discussion_r148808549
--- Diff: build/docker/ubuntu-trusty/Dockerfile ---
@@ -221,3 +221,4 @@ ENV THRIFT_ROOT /thrift
RUN mkdir -p $THRIFT_ROOT/src
COPY Dockerfile $THRIFT_ROOT/
WORKDIR $THRIFT_ROOT/src
+
--- End diff --
This extra line will force an image rebuild.---
