Maint: do not mock os functions

- Use filepaths with /tmp for tests instead
- Only mock functions where filepath can't be specified such as user.Lookup

internal/alpine/alpine.go

@@ -3,9 +3,7 @@ package alpine
 
 import (
 	"context"
-
-	"github.com/qdm12/golibs/os"
-	"github.com/qdm12/golibs/os/user"
+	"os/user"
 )
 
 type Configurator interface {
@@ -14,13 +12,17 @@ type Configurator interface {
 }
 
 type configurator struct {
-	openFile os.OpenFileFunc
-	osUser   user.OSUser
+	alpineReleasePath string
+	passwdPath        string
+	lookupID          func(uid string) (*user.User, error)
+	lookup            func(username string) (*user.User, error)
 }
 
-func NewConfigurator(openFile os.OpenFileFunc, osUser user.OSUser) Configurator {
+func NewConfigurator() Configurator {
 	return &configurator{
-		openFile: openFile,
-		osUser:   osUser,
+		alpineReleasePath: "/etc/alpine-release",
+		passwdPath:        "/etc/passwd",
+		lookupID:          user.LookupId,
+		lookup:            user.Lookup,
 	}
 }