software/slapos-testing: include shellcheck 🚧

software/slapos-testing/software.cfg

@@ -29,6 +29,14 @@ parts =
   eggs/scripts
   phantomjs
   template
+  shellcheck
+
+[shellcheck:linux and platform.machine() == 'x86_64']
+recipe = slapos.recipe.build:download-unpacked
+url = https://github.com/koalaman/shellcheck/releases/download/v0.8.0/shellcheck-v0.8.0.linux.aarch64.tar.xz
+md5sum = a0338c733d1283a51777b27edf9ccc96
+environment =
+  PATH=${xz-utils:location}/bin/  :%(PATH)s
 
 [bootstrap-slapos.recipe.cmmi]
 # install our develop version of slapos.recipe.cmmi before anything else,