Improve error message on docker compose check failure

services/checker/checker.go

@@ -3,6 +3,7 @@ package checker
 import (
 	"kool-dev/kool/core/builder"
 	"kool-dev/kool/core/shell"
+	"strings"
 )
 
 // Checker defines the check kool dependencies method
@@ -33,7 +34,11 @@ func (c *DefaultChecker) Check() error {
 	}
 
 	if _, err := c.shell.Exec(c.dockerComposeCmd); err != nil {
-		return ErrDockerComposeNotFound
+		if strings.Contains(strings.ToLower(err.Error()), "is not a docker command") {
+			return ErrDockerComposeNotFound
+		}
+		// anything else, raise the original error
+		return err
 	}
 
 	if _, err := c.shell.Exec(c.dockerCmd); err != nil {