Merge two commits.

Author: lamuguo

Dockerfile

@@ -5,8 +5,8 @@ WORKDIR /opt
 RUN apt-get update && \
     apt-get install -y git build-essential autoconf libtool make
 
-# Install protoc
+# Install jsonnet
 RUN git clone https://github.com/google/jsonnet && \
     cd jsonnet && \
     make && \
-    cd /
+    cd ..