Question 338740 in Docker Question posted in
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How to add a local file to a container during Docker build with Docker Desktop?

I would like to build a new image with docker build using docker desktop. It seems that the build context might not be available for the build process.

FROM apache/airflow:2.8.0-python3.8
ADD /tmp/requirements.txt .
RUN pip install apache-airflow==2.2.0 -r requirements.txt

It produces the following error:

❯ docker build - < Dockerfile_local
[+] Building 3.3s (6/7)                                                                                  docker:desktop-linux
 => [internal] load build definition from Dockerfile                                                                     0.0s
 => => transferring dockerfile: 195B                                                                                     0.0s
 => [internal] load .dockerignore                                                                                        0.0s
 => => transferring context: 2B                                                                                          0.0s
 => [internal] load metadata for docker.io/apache/airflow:2.8.0-python3.8                                                3.3s
 => [internal] load build context                                                                                        0.0s
 => => transferring context: 2B                                                                                          0.0s
 => CANCELED [1/3] FROM docker.io/apache/airflow:2.8.0-python3.8@sha256:6d9a8f90ad5d6005f81b9a059134237f4f970b91d282799  0.0s
 => => resolve docker.io/apache/airflow:2.8.0-python3.8@sha256:6d9a8f90ad5d6005f81b9a059134237f4f970b91d282799a350f7dda  0.0s
 => => sha256:6d9a8f90ad5d6005f81b9a059134237f4f970b91d282799a350f7ddace6ab1a5 1.61kB / 1.61kB                           0.0s
 => => sha256:d7d27a316f5cd64a0b6eb87047ac04203c8b667a2c363e623bc326e8ea6665d7 25.67kB / 25.67kB                         0.0s
 => => sha256:180b4f3737b0430931e906094d02b0728912110b90c83ae7ffc467a0b01ba4fa 4.47kB / 4.47kB                           0.0s
 => ERROR [2/3] ADD /tmp/requirements.txt .                                                                              0.0s
------
 > [2/3] ADD /tmp/requirements.txt .:
------
Dockerfile:2
--------------------
   1 |     FROM apache/airflow:2.8.0-python3.8
   2 | >>> ADD /tmp/requirements.txt .
   3 |     RUN pip install apache-airflow==2.2.0 -r requirements.txt
--------------------
ERROR: failed to solve: failed to compute cache key: failed to calculate checksum of ref f9dd9b67-5ecf-41ed-beed-87bfda7e1dfd::8el50kgcmxh0ay9r8ue7zhgp1: failed to walk /var/lib/docker/tmp/buildkit-mount348437173/tmp: lstat /var/lib/docker/tmp/buildkit-mount348437173/tmp: no such file or directory

View build details: docker-desktop://dashboard/build/desktop-linux/desktop-linux/10tveo6gaue4pbz92r0mnwvgc

Is there a way to share a file with the build context like this?

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2

Answers


  1. 0

    Move the requirements.txt to the same path as Dockerfile and then change the ADD command to:

    ADD requirements.txt .

    If this works, thsi will serve as a sanity check that will allow you to narrow the problem to the tmp path.

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  2. 0

    I believe the error is due to using docker build with - < Dockerfile_local, which pipes the Dockerfile into Docker build from standard input (stdin). This wouldn’t include any local files (like your requirements.txt) in the build context, and that’s why Docker cannot find requirements.txt when it tries to ADD it to ADD it to the image.

    Make sure requirements.txt is located in the directory where you’re running the docker build command. The build context should be a directory, not stdin, so that Docker can access local files.

    Modify the ADD command in your Dockerfile to correctly reference requirements.txt from within the build context. If requirements.txt is in the same directory as the Dockerfile, the reference is correct as it currently is. Also, ensure the path is relative to the build context’s root:

    FROM apache/airflow:2.8.0-python3.8
ADD requirements.txt .
RUN pip install -r requirements.txt

    Instead of piping the Dockerfile into docker build, run the command in the directory containing both the Dockerfile and requirements.txt, specifying the directory as the build context:

    docker build .
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