diff --git a/Dockerfile_github_nomcr b/Dockerfile_github_nomcr
index 5883c89..ff6dcaf 100644
--- a/Dockerfile_github_nomcr
+++ b/Dockerfile_github_nomcr
@@ -17,19 +17,21 @@ ARG DEBIAN_FRONTEND="noninteractive"
 
 MAINTAINER David Meunier "david.meunier@univ-amu.fr"
 
+
 ############################################# install skullTo3d
 
 WORKDIR /opt/packages/
-
 RUN git clone https://github.com/macatools/skullTo3d.git
 WORKDIR /opt/packages/skullTo3d
-
 RUN python3 setup.py develop
-
-
-
-
 # RUN pip install --no-deps --index-url https://test.pypi.org/simple/ --pre skullTo3d
 
 RUN python -c "import skullTo3d; print(skullTo3d.__version__)"
 
+############################################# IsoSurface requires specifically libXp6
+#RUN echo 'deb http://security.ubuntu.com/ubuntu precise-security main' >> /etc/apt/sources.list
+#RUN apt update
+#RUN apt install libxp6
+
+RUN ls -l /usr/lib/x86_64-linux-gnu
+RUN ln -s /usr/lib/x86_64-linux-gnu/libXpm.so.4.11.0 /usr/lib/x86_64-linux-gnu/libXp.so.6
diff --git a/skullTo3d/_version.py b/skullTo3d/_version.py
index 4acdf66..d595d27 100644
--- a/skullTo3d/_version.py
+++ b/skullTo3d/_version.py
@@ -1,2 +1,2 @@
 
-__version__ = '0.0.1-rc11'
+__version__ = '0.0.1-rc12'