export orterun as mpiexec

Dockerfile

@@ -80,7 +80,7 @@ RUN /bin/bash /home/user/spack-environments/spack_setup.sh -b ${toolchain}
 # If testing toolchains, load the freshly made toolchain and compile octopus and run checks
 # If the toolchain variable is 'global' then exit(0) and do nothing else clone octopus, load toolchains and make and test octopus
 ENV MODULEPATH=/home/user/spack-environments/lmod/Core:/etc/lmod/modules:/usr/share/lmod/lmod/modulefiles
-
+ENV MPIEXEC=orterun
 RUN if [ "${toolchain}" = "global" ]; \
     then exit 0; \
     else \