Conda package build container

An Ubuntu 24.04 container for building Conda packages in a clean environment. It includes Miniconda and conda-build, supports both x86_64 and ARM64 hosts, and keeps the host source tree outside the image.

Build a package locally

Build the image:

docker build --tag conda-package-builder .

Mount the directory containing your source code and recipe. The mounted directory is available at /work:

docker run --rm -it \
  --volume "$PWD":/work \
  conda-package-builder \
  conda build recipe

For a recipe in a different directory, mount it explicitly:

docker run --rm -it \
  --volume /path/to/project:/work \
  conda-package-builder \
  conda build /work/recipe

conda build creates its build and output directories inside the container by default. To retain the built packages on the host, mount a local output directory and provide it to Conda:

mkdir -p conda-bld
docker run --rm -it \
  --volume "$PWD":/work \
  --volume "$PWD/conda-bld":/conda-bld \
  conda-package-builder \
  conda build --croot /conda-bld recipe

The helper that only tests whether packages can be installed remains available as test-conda-package.

GitHub Actions

Use Actions → Test Conda package → Run workflow, enter package specifications separated by spaces, and optionally supply channels separated by spaces. The workflow builds the same Ubuntu image and runs the requested installation test.

Examples:

• Packages: samtools=1.21
• Channels: conda-forge bioconda