Use arm64 lifecycle for arm64 linux base image

[jpena-r7]

Summary

This change installs the arm64 lifecycle when creating a builder on an arm64 linux base image. Tests were also added to verify expected behavior.

Unit and acceptance tests were run locally.

Output

Before

The current behavior is that it always downloads the x86-64 lifecycle.

After

I verified the correct behavior by building pack on an arm64 machine and creating a builder on an arm64 stack. See the output from a small script used to test the change below and the correct lifecycle url being used. it also verifies that the lifecycle binary can be executed inside the container.

++ git clone -q https://github.com/jpena-r7/pack.git
++ cd pack
++ git checkout --track origin/use-arm64-lifecycle-on-arm64
Branch 'use-arm64-lifecycle-on-arm64' set up to track remote branch 'use-arm64-lifecycle-on-arm64' from 'origin'.
Switched to a new branch 'use-arm64-lifecycle-on-arm64'
++ make build
mkdir out/tests || (exit 0)
> Building...
go build -ldflags "-s -w -X 'github.com/buildpacks/pack.Version=0.0.0+git-b02475c' -extldflags " -trimpath -o ./out/pack -a ./cmd/pack
++ cd ..
++ git clone -q https://github.com/jericop/amazonlinux-builder-buildpackless-base.git
++ ./pack/out/pack builder create amazonlinux-builder:arm --config amazonlinux-builder-buildpackless-base/builder.toml
Warning: builder configuration: empty order definition
base-cnb: Pulling from jericop/amazonlinux-run
Digest: sha256:f4e33a89725f6a9aa47dc28ae36ed32595db78d1eef28155fd75511199eb2238
Status: Image is up to date for jericop/amazonlinux-run:base-cnb
base-cnb: Pulling from jericop/amazonlinux-build
Digest: sha256:d775ff59e9b4a4a8e9e0c2449114fafe5b183be68115263679940c1782984589
Status: Image is up to date for jericop/amazonlinux-build:base-cnb
Downloading from https://github.com/buildpacks/lifecycle/releases/download/v0.14.1/lifecycle-v0.14.1+linux.arm64.tgz
5.17 MB/5.17 MB
Successfully created builder image amazonlinux-builder:arm
Tip: Run pack build <image-name> --builder amazonlinux-builder:arm to use this builder
++ docker run -it --rm --entrypoint /cnb/lifecycle/lifecycle amazonlinux-builder:arm
ERROR: failed to parse arguments
++ pack builder inspect amazonlinux-builder:arm
++ grep -A1 Run
Run Images:
  jericop/amazonlinux-run:base-cnb
++ docker inspect jericop/amazonlinux-run:base-cnb
++ jq '.[].Architecture'
"arm64"
++ arch
aarch64

Documentation

• Should this change be documented?
  • Yes, see #___
  • No

Related

Resolves #1518

[codecov]

Codecov Report

Merging #1521 (3a29b7b) into main (2138b9f) will decrease coverage by 1.03%.
The diff coverage is 81.25%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1521      +/-   ##
==========================================
- Coverage   81.14%   80.11%   -1.02%     
==========================================
  Files         155      155              
  Lines       10086    10095       +9     
==========================================
- Hits         8183     8087      -96     
- Misses       1420     1524     +104     
- Partials      483      484       +1     

Flag	Coverage Δ
os_linux	79.89% <81.25%> (+0.02%)	⬆️
os_macos	77.37% <81.25%> (-<0.01%)	⬇️
os_windows	79.96% <81.25%> (-1.05%)	⬇️
unit	80.11% <81.25%> (-1.02%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

[jjbustamante]

It looks awesome to me!!! Great job @jpena-r7!