Activate conda environment in docker

问题

I need to activate environment in docker and run a command in this environment. I create the environment, but then I try to activate this environment and run the command in this way:

CMD [ "source activate mro_env && ipython kernel install --user --name=mro_env" ]

but when I ran docker I get an error:

[FATAL tini (8)] exec source activate mro_env && ipython kernel install 
--user --name=mro_env failed: No such file or directory

This is the whole Dockerfile:

FROM continuumio/miniconda3

ADD /src/mro_env.yml /src/mro_env.yml
RUN conda env create -f /src/mro_env.yml

# Pull the environment name out of the mro_env.yml
RUN echo "source activate $(head -1 /src/mro_env.yml | cut -d' ' -f2)" > ~/.bashrc
ENV PATH /opt/conda/envs/$(head -1 /src/mro_env.yml | cut -d' ' -f2)/bin:$PATH

CMD [ "source activate mro_env && ipython kernel install --user --name=mro_env" ]

回答1:

You can set CONDA_DEFAULT_ENV

Like this:

FROM continuumio/miniconda3

ARG conda_env=mro_env

ADD /src/environment.yml /src/environment.yml
RUN conda env create -f /src/environment.yml

ENV PATH /opt/conda/envs/$conda_env/bin:$PATH
ENV CONDA_DEFAULT_ENV $conda_env

CMD [ "python", "test.py" ]

UPDATE:

Better use activate. Work for me:

FROM continuumio/miniconda3

ADD /src/environment.yml /src/environment.yml

RUN conda env create -f /src/environment.yml
ENV PATH /opt/conda/envs/mro_env/bin:$PATH
RUN /bin/bash -c "source activate mro_env"

CMD [ "python", "test.py" ]

回答2:

Followed this tutorial and it worked. Example Dockerfile:

FROM continuumio/miniconda
WORKDIR /usr/src/app
COPY ./ ./
RUN conda env create -f environment.yml

# Make RUN commands use the new environment:
SHELL ["conda", "run", "-n", "myenv", "/bin/bash", "-c"]

EXPOSE 5003
# The code to run when container is started:
ENTRYPOINT ["conda", "run", "-n", "myenv", "python3", "src/server.py"]

回答3:

I stumbled upon this question while trying to activate an environment and then installing some packages inside it. The SHELL solution did not work for me (maybe because I was attempting this on an older version of conda - 4.5.4 to be precise).

The solution is to activate the environment and run all required commands inside a new shell. Also, remember that each RUN will start a new shell that will not remember anything from the previous RUN.

FROM continuumio/miniconda3

ADD /src/environment.yml /src/environment.yml

RUN conda env create -f /src/environment.yml
ENV PATH /opt/conda/envs/mro_env/bin:$PATH
RUN /bin/bash -c "source activate mro_env \
    && conda config --add channels conda-forge \
    && conda install Jupiter \
    && conda env list"

CMD [ "python", "test.py" ]

Note every command is within "" of the same /bin/bash -c.

回答4:

Similar to other answers but with SHELL which looks more cleaner

RUN wget \
https://repo.anaconda.com/miniconda/Miniconda3-latest-Linux-x86_64.sh \
&& mkdir /root/.conda \
&& bash Miniconda3-latest-Linux-x86_64.sh -b \
&& rm -f Miniconda3-latest-Linux-x86_64.sh \
&& echo "source activate base" > ~/.bashrc

SHELL ["/bin/bash", "-c"]
ARG CONDA_ENV=env_name 
# Create env
RUN conda --version \
  && conda create -n ${CONDA_ENV} python=3.7 \
  && source activate ${CONDA_ENV}

回答5:

I understand that there is no one solution fits all but this is what I have been using with my Flask applications:

FROM continuumio/miniconda3

COPY environment.yml .
RUN conda env create -f environment.yml

COPY app /app
WORKDIR /app

CMD ["conda", "run", "-n", "my_env", "python", "app.py"]

The logic is very simple. First, env file is copied followed env creation. Next, application files (this is where all my Flask application files are located) are copied and using CMD the application is started by pointing to the respective env.

This is the project directory structure I used with the Dockerfile:

-- project
    -- app
        -- app.py
    -- environment.yaml
    -- Dockerfile

回答6:

The problem for me was that running the command conda activate env inside docker after installing caused conda to ask me to use the conda init bash command. However, this command asks you to restart the shell, which we don't want to do inside docker. So the solution is to realize that the reason conda is asking you to restart the shell is because it has modified and wants to reload the contents of ~/.bashrc. We can do this manually and forego the need for restarting the shell using:

. ~/.bashrc

Here's the full dockerfile for those who want it:

FROM ubuntu:18.04
# update apt and get miniconda
RUN apt-get update \
    && apt-get install -y wget \
    && wget https://repo.anaconda.com/miniconda/Miniconda3-latest-Linux-x86_64.sh


# install miniconda
ENV PATH="/root/miniconda3/bin:$PATH"
RUN mkdir /root/.conda && bash Miniconda3-latest-Linux-x86_64.sh -b

# create conda environment
RUN conda init bash \
    && . ~/.bashrc \
    && conda create --name test-env python=3.7 \
    && conda activate test-env \
    && pip install ipython

来源：https://stackoverflow.com/questions/55123637/activate-conda-environment-in-docker

标签

python

Docker

Anaconda

conda