fix(container/network): recreate container changes static IP [EE-5448] (#8960)

Co-authored-by: Chaim Lev-Ari <chaim.levi-ari@portainer.io>

api/docker/images/puller.go

@@ -0,0 +1,50 @@
+package images
+
+import (
+	"context"
+	"io"
+
+	"github.com/portainer/portainer/api/dataservices"
+
+	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/client"
+	"github.com/rs/zerolog/log"
+)
+
+type Puller struct {
+	client         *client.Client
+	registryClient *RegistryClient
+	dataStore      dataservices.DataStore
+}
+
+func NewPuller(client *client.Client, registryClient *RegistryClient, dataStore dataservices.DataStore) *Puller {
+	return &Puller{
+		client:         client,
+		registryClient: registryClient,
+		dataStore:      dataStore,
+	}
+}
+
+func (puller *Puller) Pull(ctx context.Context, image Image) error {
+	log.Debug().Str("image", image.FullName()).Msg("starting to pull the image")
+
+	registryAuth, err := puller.registryClient.EncodedRegistryAuth(image)
+	if err != nil {
+		log.Debug().
+			Str("image", image.FullName()).
+			Err(err).
+			Msg("failed to get an encoded registry auth via image, try to pull image without registry auth")
+	}
+
+	out, err := puller.client.ImagePull(ctx, image.FullName(), types.ImagePullOptions{
+		RegistryAuth: registryAuth,
+	})
+	if err != nil {
+		return err
+	}
+	defer out.Close()
+
+	_, err = io.ReadAll(out)
+
+	return err
+}