refactor: use bash builtin type -P instead of which command 🐚

Author: oldratlee

bin/c

@@ -102,7 +102,7 @@ done
 
 readonly keep_eol quiet target_command
 
-if ((${#target_command[@]} > 0)) && ! which "${target_command[0]}" &>/dev/null; then
+if ((${#target_command[@]} > 0)) && ! type -P "${target_command[0]}" &>/dev/null; then
   die "command '${target_command[0]}' not found on PATH"
 fi
 

bin/cp-into-docker-run

@@ -180,10 +180,10 @@ command -v docker &>/dev/null || die 'docker command not found!'
 readonly specified_run_command=${args[0]}
 run_command=$specified_run_command
 if [ ! -f "$specified_run_command" ]; then
-  which "$specified_run_command" &>/dev/null ||
+  type -P "$specified_run_command" &>/dev/null ||
     die "specified command not exists and not found in PATH: $specified_run_command"
 
-  run_command=$(which "$specified_run_command")
+  run_command=$(type -P "$specified_run_command")
 fi
 
 run_command=$(realpath "$run_command")