pythondockeranacondadockerfileminiconda

How to install packages with miniconda in Dockerfile?


I have a simple Dockerfile:

FROM ubuntu:18.04

RUN apt-get update

RUN apt-get install -y wget && rm -rf /var/lib/apt/lists/*

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 PATH="/root/miniconda3/bin":$PATH >> .bashrc \
    && exec bash \
    && conda --version

RUN conda --version

And it cannot be built. At the very last step I get /bin/sh: 1: conda: not found....
The first appearance of conda --version did not raise an error which makes me wonder is that an PATH problem?
I would like to have another RUN entry in this Dockerfile in which I would install packages with conda install ...
At the end I want to have CMD ["bash", "test.py"] entry so that when in do docker run this image it automatically runs a simple python script that imports all the libraries installed with conda. Maybe also a CMD ["bash", "test.sh"] script that would test if conda and python interpreter are indeed installed.

This is a simplified example, there will be a lot of software so I do not want to change the base image.


Solution

  • This will work using ARG and ENV:

    FROM ubuntu:18.04
    
    ENV PATH="/root/miniconda3/bin:${PATH}"
    ARG PATH="/root/miniconda3/bin:${PATH}"
    
    # Install wget to fetch Miniconda
    RUN apt-get update && \
        apt-get install -y wget && \
        apt-get clean && \
        rm -rf /var/lib/apt/lists/*
    
    # Install Miniconda on x86 or ARM platforms
    RUN arch=$(uname -m) && \
        if [ "$arch" = "x86_64" ]; then \
        MINICONDA_URL="https://repo.anaconda.com/miniconda/Miniconda3-latest-Linux-x86_64.sh"; \
        elif [ "$arch" = "aarch64" ]; then \
        MINICONDA_URL="https://repo.anaconda.com/miniconda/Miniconda3-latest-Linux-aarch64.sh"; \
        else \
        echo "Unsupported architecture: $arch"; \
        exit 1; \
        fi && \
        wget $MINICONDA_URL -O miniconda.sh && \
        mkdir -p /root/.conda && \
        bash miniconda.sh -b -p /root/miniconda3 && \
        rm -f miniconda.sh
    
    RUN conda --version