nektarpp/nekmesh repository overview

⁠nekmesh image

This image provides a full installation of the NekMesh executable with all mesh generation capabilities enabled via the OpenCASCADE CAD framework. It is designed to be a smaller image than the nektarpp/nektar image if you are interested in solely running NekMesh as a standalone executable.

⁠Building

The image is built using nektarpp/nektar-env and requires as build context the path to the Nektar++ source tree. It supports several additional build arguments:

• ENV_IMAGE is used to select the environment to build against. This is used by the CI to e.g. consistently build against the correct commits. By default this is set to nektarpp/nektar-env:default.
• INSTALL_PREFIX can be set to adjust the install prefix, which is /usr/local by default.

Then build the image using a command similar to:

docker build -t nektarpp/nekmesh -f Dockerfile ~/nektar++

Note that this is a multi-stage build: after the initial build phase is completed, the build tree is erased along with development headers, and the libraries/executables installed into a fresh Debian 12 container (with appropriate packages for runtime libraries). If you want to keep the build files, you should instead only build up to the end of the build stage using --target build:

docker build --target build -t nekmesh-build -f Dockerfile ~/nektar++

⁠About Nektar++

Nektar++ is an open-source framework, distributed under the MIT license, for the spectral/hp element method. These images contain useful environments for users and developers, and are built automatically with new tags, and commits to the main branch.

For more information on Nektar++, see our website⁠ and source code released on our GitLab instance⁠.