Fix syntax error in the beanstalkd-console dockerfile

beanstalkd-console/Dockerfile

@@ -7,9 +7,9 @@ RUN apt-get update && apt-get install -y curl
 RUN curl -sL https://github.com/ptrofimov/beanstalk_console/archive/master.tar.gz | tar xvz -C /tmp
 RUN mv /tmp/beanstalk_console-master /source
 
-RUN apt-get remove --purge -y curl &&
-    apt-get autoclean &&
-    apt-get clean &&
+RUN apt-get remove --purge -y curl && \
+    apt-get autoclean && \
+    apt-get clean && \
     rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
 EXPOSE 2080