fix: warn Apple M1 (arm64) users

[catthehacker]

fixes #742
should look something like this (screenshot from Windows Terminal)

[codecov]

Codecov Report

Merging #743 (f2adb09) into master (0f04942) will increase coverage by 1.01%.
The diff coverage is 55.55%.

@@            Coverage Diff             @@
##           master     #743      +/-   ##
==========================================
+ Coverage   49.27%   50.29%   +1.01%     
==========================================
  Files          23       23              
  Lines        2401     2579     +178     
==========================================
+ Hits         1183     1297     +114     
- Misses       1090     1142      +52     
- Partials      128      140      +12     

Impacted Files	Coverage Δ
pkg/container/docker_run.go	1.84% <0.00%> (-0.09%)	⬇️
pkg/model/workflow.go	25.29% <2.43%> (-0.43%)	⬇️
pkg/common/git.go	52.85% <30.15%> (-6.94%)	⬇️
pkg/runner/runner.go	68.96% <33.33%> (-7.51%)	⬇️
pkg/model/planner.go	34.56% <41.37%> (+1.48%)	⬆️
pkg/container/docker_pull.go	36.17% <64.70%> (+17.98%)	⬆️
pkg/runner/step_context.go	75.06% <76.71%> (+6.11%)	⬆️
pkg/runner/run_context.go	79.84% <95.52%> (+3.44%)	⬆️
pkg/runner/command.go	90.58% <100.00%> (+2.35%)	⬆️
pkg/runner/logger.go	64.81% <100.00%> (+0.66%)	⬆️
... and 3 more

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[mergify]

@catthehacker this pull request has failed checks 🛠

[catthehacker]

??????????????? linter pls

[mergify]

@catthehacker this pull request has failed checks 🛠