Question 118713 in Ubuntu Question posted in
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Ubuntu – how to copy folders from my linux machine to a docker container?

FROM ubuntu:20.04

ENV DEBIAN_FRONTEND=noninteractive

RUN apt-get update

WORKDIR /home/

RUN mkdir folder1

COPY /home/folder1/* /home/folder1

RUN mkdir folder2

COPY /home/folder2/* /home/folder2

i have written the above to copy 2 folders from my pc to a docker container using this dockerfile. i am giving the correct path of folders from source. Dockerfile and folders to be copied and Dockerfile are present on the same level
but i am getting this error

=> ERROR [5/7] COPY /home/folder1/* /home/folder1 0.0s

[5/7] COPY /home/sushant/jetson/* ./jetson:

Dockerfile:6

4 | WORKDIR /home/

5 | RUN mkdir jetson

6 | >>> COPY /home/folder1/* /home/folder1

7 | RUN mkdir cuda

8 | COPY /home/folder2/* /home/folder2

ERROR: failed to solve: lstat /var/lib/docker/tmp/buildkit-mount2125610381/home/folder1: no such file or directory

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3

Answers


  1. 0

    Have a look at the docker cp function.

    By using the following command:
    docker cp [OPTIONS] CONTAINER:SRC_PATH LOCAL_DEST_PATH
    or
    docker cp [OPTIONS] LOCAL_SRC_PATH CONTAINER:DEST_PATH

    You should be able to achieve what’s needed. You can refer to the docker documentation regarding the command at any time.

    Good Luck!

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  2. 0

    What you are trying to copy should be in the same directory where your Dockerfile is located.
    Move folder1 and folder2 to the directory where your Dockerfile is located then build the image again.

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  3. 0

    The left-hand side of a COPY directive is always relative to the build context, the directory you passed as the argument to docker build or named in a docker-compose.yml file. For example, if you do the very common

    docker build .

    then even though they look like absolute paths, the /home/folder1 on the left-hand side is actually interpreted as relative to the current directory ..

    In another answer you note that the Dockerfile, folder1, and folder2 are all in the same directory, again a typical setup. In this case you need to use a relative path on the left-hand side of COPY

    FROM ubuntu:20.04
WORKDIR /home
COPY ./folder1/* /home/folder1/
COPY ./folder2/* /home/folder2/

    I tend to also use a relative path (relative to WORKDIR) on the right-hand side of COPY as well. COPY creates the destination directory if needed and so you do not need to RUN mkdir.

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