Missing dependecies for LoSoTo

Former-commit-id: 4a8bf8fe

Docker/Dockerfile

@@ -98,7 +98,9 @@ ARG LoSoTo_TAG=master
 LABEL LoSoTo.version.tag=${LoSoTo_TAG}
     
 RUN apt-get update && apt-get install -y nodejs python3-pip git wsclean
-RUN python3 -m pip install cwltool cwl-runner -e "git://github.com/darafferty/LSMTool.git@${LSMTool_TAG}#egg=LSMTool" "toil[cwl]"==${TOIL_VERSION} 
+RUN python3 -m pip install cwltool cwl-runner -e "git://github.com/darafferty/LSMTool.git@${LSMTool_TAG}#egg=LSMTool" \
+                                   "toil[cwl]"==${TOIL_VERSION} \
+                                   matplotlib 
 
 RUN python3 -m pip install -e "git+https://github.com/revoltek/losoto.git@${LoSoTo_TAG}#egg=LoSoTo"