Question 38568 in Ubuntu Question posted in
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How to persist conda packages in Docker container – Ubuntu

I have a docker container (running Ubuntu) with conda (miniconda) installed. I can create new conda environments in the container but they will not persist the next time I create a new container. I don’t want to install the packages as part of the Docker image, so what is the best way to make install packages persist in the container? I imagine some directory needs to be mounted on the host so any conda install command installs packages on a host directory and is there the next time a new container is spawned.

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  1. Chosen as BEST ANSWER
    0

    The following two locations need to be mounted from outside of the container to make sure conda environment packages don't get removed between container runs:

    1. Create directories for python packages outside of container

    mkdir ~/conda_stuff
mkdir ~/conda_stuff/envs
mkdir ~/conda_stuff/pkgs

    2. Mount conda env and pkgs directories

    # assume conda installed in /opt/anaconda in the container
docker run -it -v ~/conda_stuff/envs:/opt/anaconda/envs 
               -v ~/conda_stuff/pkgs:/opt/anaconda/pkgs

    Now any packages installed in the conda environment via pip or conda install will persist when the container is exited.


  2. 0

    The best way actually would be to create your own image with the required conda environment already pre-installed.

    This is because docker containers are meant to be ephemeral, i.e., stopping and removing a container will also throw away any changed state in it and you should be able to just start a new container from the same image.

    To store persistent data you have to use volumes or bind-mounts, see the docker storage docs on this: https://docs.docker.com/storage/

    In your case you would have to add one or multiple volumes to your container and place any changed/installed files there.

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