What I want to do
I want to install yq
to edit some yaml files on a Docker container.
Dockerfile
FROM python:3
RUN apt-get update
RUN apt-key adv --keyserver keyserver.ubuntu.com --keyserver-option http-proxy=http://xxxxxx.com:9999 --recv-keys CC86BB64
RUN apt-get install -y software-properties-common
RUN add-apt-repository ppa:rmescandon/yq
RUN apt update
RUN apt install yq -y
Reference
https://github.com/mikefarah/yq#on-ubuntu-1604-or-higher-from-debian-package
Build Logs
=> => transferring dockerfile: 486B 0.0s
=> [internal] load .dockerignore 0.0s
=> => transferring context: 2B 0.0s
=> [internal] load metadata for docker.io/library/python:3 0.0s
=> CACHED [1/7] FROM docker.io/library/python:3 0.0s
=> [2/7] RUN apt-get update 2.7s
=> [3/7] RUN apt-key adv --keyserver keyserver.ubuntu.com --keyserver-option http-proxy=http://xxxxxx.com:9999 --recv-keys CC86BB64 1.2s
=> [4/7] RUN apt-get install -y software-properties-common 11.4s
=> [5/7] RUN add-apt-repository ppa:rmescandon/yq 13.3s
=> ERROR [6/7] RUN apt update 1.8s
------
> [6/7] RUN apt update:
#9 0.159
#9 0.159 WARNING: apt does not have a stable CLI interface. Use with caution in scripts.
#9 0.159
#9 0.205 Hit:1 http://deb.debian.org/debian buster InRelease
#9 0.205 Hit:2 http://security.debian.org/debian-security buster/updates InRelease
#9 0.227 Hit:3 http://deb.debian.org/debian buster-updates InRelease
#9 0.870 Ign:4 http://ppa.launchpad.net/rmescandon/yq/ubuntu impish InRelease
#9 1.356 Err:5 http://ppa.launchpad.net/rmescandon/yq/ubuntu impish Release
#9 1.356 404 Not Found [IP: 91.189.95.85 80]
#9 1.381 Reading package lists...
#9 1.752 E: The repository 'http://ppa.launchpad.net/rmescandon/yq/ubuntu impish Release' does not have a Release file.
------
executor failed running [/bin/sh -c apt update]: exit code: 100
Question
How can I fix it?
3
Answers
TL;DR
The PPA for
yq
is not available on thepython:3
image’s Linux distribution.Change your Dockerfile to download the binary directly instead:
Explanation
The mentioned instructions for installing
yq
are expecting an Ubuntu-based image, but thepython:3
Docker image is based on Debian 10 / Buster (as of the writing of this answer):Dockerfile for
python:3
=python:3.9
=python:3.9.6
:The error
means that the package
ppa:rmescandon/yq
does not support your distribution. You can check the supports distributions from http://ppa.launchpad.net/rmescandon/yq/ubuntu:The workaround is to just install it from source or to just download the
yq
binary itself. This is supported by yq: https://github.com/mikefarah/yq#wget:Pick out a specific release from yq’s Releases page (preferably matching one of the versions distributed for Ubuntu same as in the PPA) and modify your Dockerfile to:
Previous answer did not work in my case.
So this is my alternative solution:
You can also get the
yq
in an image using,