add key refresh to dockerfile

Author: oesteban

Dockerfile

@@ -43,8 +43,7 @@ RUN apt-key add /root/.neurodebian.gpg && \
     apt-get update && \
     apt-get install -y --no-install-recommends curl bzip2 ca-certificates xvfb && \
     curl -sSL http://neuro.debian.net/lists/xenial.us-ca.full >> /etc/apt/sources.list.d/neurodebian.sources.list && \
-# Enable if really necessary
-#    apt-key adv --recv-keys --keyserver hkp://ha.pool.sks-keyservers.net 0xA5D32F012649A5A9 || true; \
+    apt-key adv --refresh-keys --keyserver hkp://ha.pool.sks-keyservers.net 0xA5D32F012649A5A9 || true; \
     apt-get update
 
 # Installing freesurfer