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Showing content from https://github.com/dask/dask-docker below:

dask/dask-docker: Docker images for dask

An example docker-compose.yml file is included for starting a small cluster.

Open the notebook using the URL that is printed by the output so it has the token.

On a new notebook run:

from dask.distributed import Client
client = Client()  # The address is automatically set by the DASK_SCHEDULER_ADDRESS environment variable
client.ncores()

It should output something like this:

{'tcp://172.23.0.4:41269': 4}

The following environment variables are supported for both the base and notebook images:

• $EXTRA_APT_PACKAGES - Space separated list of additional system packages to install with apt.
• $EXTRA_CONDA_PACKAGES - Space separated list of additional packages to install with conda. This variable can also be used to specify custom conda channels; for example, to install the latest Dask conda nightly packages:

docker run -e EXTRA_CONDA_PACKAGES="-c dask/label/dev dask" daskdev/dask:latest

• $EXTRA_PIP_PACKAGES - Space separated list of additional python packages to install with pip.
• $USE_MAMBA - Boolean controlling whether to use conda or mamba to install $EXTRA_CONDA_PACKAGES.

The notebook image supports the following additional environment variables:

• $JUPYTERLAB_ARGS - Extra arguments to pass to the jupyter lab command.

Docker compose provides an easy way to building all the images with the right context

cd build

# Use legacy builder as buildkit still doesn't support subdirectories when building from git repos
export DOCKER_BUILDKIT=0
export COMPOSE_DOCKER_CLI_BUILD=0

docker-compose build

# Just build one image e.g. notebook
docker-compose build notebook

The images can be cross-built using docker buildx bake. However buildx bake does not listen to depends_on (since in theory that is only a runtime not a build time constraint docker/buildx#447). To work around this we first need to build the "docker-stacks-foundation" image.

cd build

# If you have permission to push to daskdev/
docker buildx bake --progress=plain --set *.platform=linux/arm64,linux/amd64 --push docker-stacks-foundation
docker buildx bake --progress=plain --set *.platform=linux/arm64,linux/amd64 --push

# If you don'tset DOCKERUSER to your dockerhub username.
export DOCKERUSER=holdenk
docker buildx bake --progress=plain --set *.platform=linux/arm64,linux/amd64 --set docker-stacks-foundation.tags.image=${DOCKERUSER}/docker-stacks-foundation:lab-py38 --push docker-stacks-foundation
docker buildx bake --progress=plain --set *.platform=linux/arm64,linux/amd64 --set scheduler.tags=${DOCKERUSER}/dask --set worker.tags=${DOCKERUSER}/dask --set notebook.tags=${DOCKERUSER}/dask-notebook --set docker-stacks-foundation.tags=${DOCKERUSER}/docker-stacks-foundation:lab-py38 --set notebook.args.base=${DOCKERUSER} --push

Building and releasing new image versions is done automatically.

• When a new Dask version is released the watch-conda-forge action will trigger and open a PR to update the latest release version in this repo.
• If images build successfully that PR will be automatically merged by the automerge action.
• When a PR like this is merged which updates the pinned release version a tag is automatically created to match that version by the autotag action.
• When tags are created a new image is built and pushed using the docker/build-push-action action.

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