nektos/act docker containers. How to mount a volume? - docker

Question

How can I get act to create containers with a defined volume mounted?
I have created a local instance of a docker runner. I'm looking to optimise running of https://github.com/marketplace/actions/setup-miniconda
have created a docker image and a docker repository
have switched to using conda-lock to remove need to resolve environment.yaml
now the final step so that Conda package downloads can be shared across containers created by act with a volume mount in the container. Equivalent of:
docker run -it -v /home/vagrant/miniconda/pkgs/:/root/miniconda3/pkgs localhost:5000/my-act /bin/bash
Have tried patching docker_run.go
func (cr *containerReference) Create(capAdd []string, capDrop []string) common.Executor {
cr.input.Mounts["/root/miniconda3/pkgs"] = "/home/vagrant/miniconda/pkgs"
return common.
NewInfoExecutor("%sdocker create image=%s platform=%s entrypoint=%+q cmd=%+q", logPrefix, cr.input.Image, cr.input.Platform, cr.input.Entrypoint, cr.input.Cmd).
Then(
common.NewPipelineExecutor(
cr.connect(),
cr.find(),
cr.create(capAdd, capDrop),
).IfNot(common.Dryrun),
)
}
.actrc
-P ubuntu-latest=localhost:5000/my-act
Script to create local docker repository
actimg="localhost:5000/my-act"
docker run -d -p 5000:5000 --restart=always --name registry registry:2
docker build --no-cache -t act-custom:v1 .
docker tag act-custom:v1 $actimg
docker push $actimg
Dockerfile
FROM catthehacker/ubuntu:act-latest
ARG CONDA=/root/miniconda
ENV CONDA=$CONDA
ENV INSTALL_MINICONDA=$CONDA
ARG NODE=/opt/hostedtoolcache/node/16.18.1/x64/bin/node
ENV RUNNER_TOOL_CACHE=/opt/hostedtoolcache
ENV RUNNER_TEMP=/tmp
RUN dl=$( curl -s https://api.github.com/repos/conda-incubator/setup-miniconda/releases/latest | jq -r '.zipball_url' ) \
&& wget -q -O dl2.zip $dl \
&& unzip -q dl2.zip -d dl2 \
&& env INPUT_ARCHITECTURE=x64 \
INPUT_AUTO-ACTIVATE-BASE=true \
INPUT_AUTO-UPDATE-CONDA=false \
INPUT_CLEAN-PATCHED-ENVIRONMENT-FILE=true \
INPUT_MINIFORGE-VARIANT=mambaforge \
INPUT_MINIFORGE-VERSION=latest \
INPUT_REMOVE-PROFILES=false \
INPUT_RUN-POST=true \
INPUT_USE-MAMBA=true \
${NODE} $( find dl2/ -wholename "*/dist/setup/index.js" ) \
&& source ${CONDA}3/etc/profile.d/conda.sh \
&& conda config --set default_threads 4 \
&& ${NODE} $( find dl2/ -wholename "*/dist/delete/index.js" ) \
&& mamba install conda-lock \
&& mamba clean --all \
&& rm -r /opt/hostedtoolcache/mambaforge/ \
&& rm -rf * \
&& mv /usr/local/bin/ /usr/local/bin-old \
&& ln -s ${CONDA}3/bin /usr/local/bin
ENV CONDA=${CONDA}3
ENV PATH=${CONDA}/bin:${PATH}
VOLUME /root/miniconda3/pkgs
COPY /home/vagrant/geopandas/ci/lock /root/lock
CMD [ "/usr/bin/tail -f /dev/null" ]