cli/command: TestHooksEnabled: fix test when config file is present

This test verifies the default behavior, but when running the test
in an environment that already has a ~/.docker/config.json present,
it may fail.

This patch updates the test to configure the config-directory to
point to an empty directory, making sure it's not affected by
state.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

cli/command/cli_test.go

@@ -302,6 +302,8 @@ func TestInitializeShouldAlwaysCreateTheContextStore(t *testing.T) {
 
 func TestHooksEnabled(t *testing.T) {
 	t.Run("disabled by default", func(t *testing.T) {
+		// Make sure we don't depend on any existing ~/.docker/config.json
+		config.SetDir(t.TempDir())
 		cli, err := NewDockerCli()
 		assert.NilError(t, err)