How to install yq on Docker image python:3?

Question

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?

Answer 1

Previous answer did not work in my case.

So this is my alternative solution:

Download the latest executable file of yq from GitHub:

RUN wget -qO /usr/local/bin/yq https://github.com/mikefarah/yq/releases/latest/download/yq_linux_amd64

Set execute permission for file:

RUN chmod a+x /usr/local/bin/yq