feat: rolling deploy strategy for global service, always recreate

internal/api/container.go

@@ -69,6 +69,12 @@ func (c *Container) ServicePorts() ([]PortSpec, error) {
 	return ports, nil
 }
 
+func (c *Container) ServiceSpec() ServiceSpec {
+	// TODO: migrate api.Container type to use ContainerJSON to make it possible to construct
+	// a ServiceSpec from a Container.
+	return ServiceSpec{}
+}
+
 // runningStatusRegex matches the status string of a running container.
 // - "Up 3 minutes (healthy)" -> groups: ["Up 3 minutes (healthy)", "healthy"]
 // - "Up 5 seconds" -> groups: ["Up 5 seconds", ""]

internal/api/service.go

@@ -4,6 +4,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"github.com/distribution/reference"
+	"reflect"
 	"uncloud/internal/machine/api/pb"
 )
 
@@ -37,6 +38,10 @@ func (s *ServiceSpec) Validate() error {
 	return nil
 }
 
+func (s *ServiceSpec) Equals(spec ServiceSpec) bool {
+	return reflect.DeepEqual(*s, spec)
+}
+
 type ContainerSpec struct {
 	Command []string
 	Image   string