Do some better linting (#13)

* Do some better linting

* Update names, Packer version, and more

* Do not lint on push

* More linting and scripting

* Cleanup shellcheck lint

* Add Packer format check

* Fix Packer formatting

* Limit to only one

* Remove generated HCL files

* Only lint checked files

* Use pipes instead

* Improve attempt to build

Actually go back to attempting to build boxes on GitHub. Maybe it will
work better with this structure

* Change to using environment files

* Initialize plugins, first

* More verbose usage of the file

* Do the output properly this time

* PACKER_LOG set to 1

* No need for python3 anymore

* Limit to only one result

* Choose a specific CPU model

* Init separately

* Update actions version

* Add version outputting

* Correct actions version

* Try to execute qemu properly

* Fix CPU model name

* Do not over-subscribe GitHub runners

* Try type instead of command to guard runs

* Do not write to non-existent folder

* Cache packer plugins

* Use ~ instead of /home/greg

* Try the proper path

* Move to intelligent matrix

* Set global env path

* Add lots of waits for VBoxManage on hosted runners

* Add more waits

* Add more waits

distros/nixos/23.05/amd64.pkrvars.hcl.sh

@@ -18,7 +18,7 @@ curl -L -o "${checksums}" "${base}.sha256"
 until curl -f -L -o "${checksums}" "${base}.sha256"; do
 	sleep 1
 done
-sha="$(cat "${checksums}" | grep minimal | cut -d' ' -f 1)"
+sha="$(grep -e minimal "${checksums}" | cut -d' ' -f 1)"
 
 # Write out HCL file
 cat << EOF > "${name}"

distros/nixos/23.11/amd64.pkrvars.hcl.sh

@@ -18,7 +18,7 @@ curl -L -o "${checksums}" "${base}.sha256"
 until curl -f -L -o "${checksums}" "${base}.sha256"; do
 	sleep 1
 done
-sha="$(cat "${checksums}" | grep minimal | cut -d' ' -f 1)"
+sha="$(grep -e minimal "${checksums}" | cut -d' ' -f 1)"
 
 # Write out HCL file
 cat << EOF > "${name}"