Build image failed as Ubuntu 21.04 (Hirsute Hippo) reaches End of Life

[yeahdongcn]

Ubuntu 21.04 (Hirsute Hippo) reaches End of Life on January 20 2022
https://fridge.ubuntu.com/2022/01/21/ubuntu-21-04-hirsute-hippo-end-of-life-reached-on-january-20-2022/

The base image in the Dockerfile needs to be updated.

Expected Behaviour

croc:latest can be built successfully.

Current Behaviour

❯ docker build -t croc .
Sending build context to Docker daemon  384.5kB
Step 1/10 : FROM ubuntu:hirsute-20210723
 ---> bf70ebd2c444
Step 2/10 : RUN apt-get update  && DEBIAN_FRONTEND=noninteractive apt-get install -yq --no-install-recommends    ansible=2.10.7-1    git=1:2.30.2-1ubuntu1    qemu-kvm    qemu-utils    unzip=6.0-26ubuntu1    xorriso=1.5.2-1    curl    jq=1.6-2.1ubuntu1  && apt-get clean  && rm -rf /var/lib/apt/lists/*
 ---> Running in 5d8c9e07d2fd
Ign:1 http://archive.ubuntu.com/ubuntu hirsute InRelease
Ign:2 http://security.ubuntu.com/ubuntu hirsute-security InRelease
Ign:3 http://archive.ubuntu.com/ubuntu hirsute-updates InRelease
Err:4 http://security.ubuntu.com/ubuntu hirsute-security Release
  404  Not Found [IP: 185.125.190.36 80]
Ign:5 http://archive.ubuntu.com/ubuntu hirsute-backports InRelease
Err:6 http://archive.ubuntu.com/ubuntu hirsute Release
  404  Not Found [IP: 91.189.91.38 80]
Err:7 http://archive.ubuntu.com/ubuntu hirsute-updates Release
  404  Not Found [IP: 91.189.91.38 80]
Err:8 http://archive.ubuntu.com/ubuntu hirsute-backports Release
  404  Not Found [IP: 91.189.91.38 80]
Reading package lists...
E: The repository 'http://security.ubuntu.com/ubuntu hirsute-security Release' does not have a Release file.
E: The repository 'http://archive.ubuntu.com/ubuntu hirsute Release' does not have a Release file.
E: The repository 'http://archive.ubuntu.com/ubuntu hirsute-updates Release' does not have a Release file.
E: The repository 'http://archive.ubuntu.com/ubuntu hirsute-backports Release' does not have a Release file.
The command '/bin/sh -c apt-get update  && DEBIAN_FRONTEND=noninteractive apt-get install -yq --no-install-recommends    ansible=2.10.7-1    git=1:2.30.2-1ubuntu1    qemu-kvm    qemu-utils    unzip=6.0-26ubuntu1    xorriso=1.5.2-1    curl    jq=1.6-2.1ubuntu1  && apt-get clean  && rm -rf /var/lib/apt/lists/*' returned a non-zero code: 100

Possible Solution

Steps to Reproduce (for bugs)

1. docker build -t croc .

Context

Your Environment

• Operating System and version (e.g. Linux, Windows, MacOS):
  Linux

• How are you running Tinkerbell? Using Vagrant & VirtualBox, Vagrant & Libvirt, on Packet using Terraform, or give details:

• Link to your project or a code example to reproduce issue: