refactor: docker engine with options

engine/options.go

@@ -0,0 +1,30 @@
+package engine
+
+import "github.com/docker/docker/client"
+
+// An Option configures a mutex.
+type Option interface {
+	Apply(*Docker)
+}
+
+// OptionFunc is a function that configure a value.
+type OptionFunc func(*Docker)
+
+// Apply calls f(option)
+func (f OptionFunc) Apply(docker *Docker) {
+	f(docker)
+}
+
+// WithClient set custom client
+func WithClient(c client.APIClient) Option {
+	return OptionFunc(func(q *Docker) {
+		q.client = c
+	})
+}
+
+// WithHidePull set custom client
+func WithHidePull(v bool) Option {
+	return OptionFunc(func(q *Docker) {
+		q.hidePull = v
+	})
+}