Question 46539 in Debian Question posted in
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Rancher desktop, docker file shell commands are not working on mac m1 chip – Debian

hi following are my docker file commands

ARG debianVersion=10.2
FROM debian:${debianVersion}
ARG user=jenkins
ARG group=jenkins
ARG uid=1000
ARG gid=1000
ARG AGENT_WORKDIR=/home/${user}/agent
USER root
RUN apt-get update
RUN groupadd -g ${gid} ${group}
RUN useradd -c "Jenkins user" -d /home/${user} -u ${uid} -g ${gid} -m ${user}

I am using rancher desktop on mac m1 chip.

On executing following command I a getting error

docker build -t test --platform linux/x86_64 .

Error message is as follows

[Warning] The requested image's platform (linux/amd64) does not match the detected host platform (linux/arm64/v8) and no specific platform was requested
---> Running in 7778b2303192
-c: 0: Can't open apt-get update
The command '/bin/sh -c apt-get update' returned a non-zero code: 127

Found that none of the shell commands are working getting error a non-zero code: 127 how to fix this?

Using rancher version 1.5.0
Using container runtime dockerd(moby)
Using Kubernetes version v1.21.14

Tags:

3

Answers


  1. 0

    Dockerfile:

    …
FROM --platform=linux/arm64 debian:${debianVersion}
…

    Build command:

    docker build -t test --platform linux/arm64 .
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  2. 0

    Downgrade to Rancher Desktop 1.4.1.

    This works but if downgrading is not an option there are workarounds on the Rancher Desktop Issues site for similar problems like this:
    qemu workaround

    As a temporary workaround, as root in the VM:

    Create /etc/conf.d/qemu-binfmt, with contents binfmt_flags="POCF"
Run rc-update --update
Run rc-service qemu-binfmt restart

    Easy way to connect to the VM and run those commands is (source):

    docker run -it --rm --privileged --pid=host justincormack/nsenter1
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  3. 0

    As far as I understand it dockerd runtime can only emulate other platform types (in the above case --platform=linux/amd64) on the m1 chip macs using Docker Desktop.

    Try using the built in nerdctl that comes packaged with Rancher Desktop:

    nerdctl build -t test --platform linux/amd64 .
nerdctl build -t test --platform linux/x86_64 .

    N.B. I have found that even with emulation, some --platform linux/x86_64 (linux/amd64) images still cannot be built, recently experienced that with official selenium set, but had no problem with wso2 & mailcatcher images

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