update pcoc version (fix error, optimize gamma.alpha in rate_distribution)

etc/docker/pcoc/Dockerfile

@@ -81,7 +81,7 @@ RUN git clone https://github.com/BioPP/bppsuite . &&\
 
 WORKDIR $HOME/pcoc
 RUN git clone https://github.com/CarineRey/pcoc.git . &&\
-    git checkout 70e60ce
+    git checkout 9648b89
 
 RUN cp -r data /data/ && \
     cp README.md /usr/local/etc/ & \

etc/docker/pcoc/build_docker.sh

@@ -4,7 +4,7 @@ set -e
 
 IMAGE_NAME=pcoc
 DOCKERFILE_DIR=.
-TAG=08312018
+TAG=10112019
 REPO=carinerey/$IMAGE_NAME:$TAG
 docker build -t $REPO -f ./Dockerfile $DOCKERFILE_DIR