HADOOP-15802. start-build-env.sh creates an invalid /etc/sudoers.d/hadoop-build-${USER_ID} file entry. Contributed by Jon Boone.

start-build-env.sh

@@ -61,7 +61,7 @@ docker build -t "hadoop-build-${USER_ID}" - <<UserSpecificDocker
 FROM hadoop-build
 RUN groupadd --non-unique -g ${GROUP_ID} ${USER_NAME}
 RUN useradd -g ${GROUP_ID} -u ${USER_ID} -k /root -m ${USER_NAME}
-RUN echo "${USER_NAME}\tALL=NOPASSWD: ALL" > "/etc/sudoers.d/hadoop-build-${USER_ID}"
+RUN echo -e "${USER_NAME}\tALL=NOPASSWD: ALL" > "/etc/sudoers.d/hadoop-build-${USER_ID}"
 ENV HOME /home/${USER_NAME}
 
 UserSpecificDocker