fix(edge stack) start unpacker container to delete host folder EE-5638 (

portainer#493)

docker/containers.go

@@ -73,3 +73,15 @@ func ContainerDelete(name string, opts types.ContainerRemoveOptions) error {
 		return cli.ContainerRemove(context.Background(), name, opts)
 	})
 }
+
+func ContainerWait(name string, condition container.WaitCondition) (<-chan container.WaitResponse, <-chan error) {
+	var statusCh <-chan container.WaitResponse
+	var errCh <-chan error
+
+	withCli(func(cli *client.Client) error {
+		statusCh, errCh = cli.ContainerWait(context.Background(), name, condition)
+		return nil
+	})
+
+	return statusCh, errCh
+}

docker/docker_copy.go

@@ -53,6 +53,19 @@ func removeAndCopy(src, dst string, stackID int, stackName, assetPath string, ne
 
 	defer removeUnpackerContainer(unpackerContainer)
 
+	if err = ContainerStart(unpackerContainer.ID, types.ContainerStartOptions{}); err != nil {
+		return err
+	}
+
+	statusCh, errCh := ContainerWait(unpackerContainer.ID, container.WaitConditionNotRunning)
+	select {
+	case err := <-errCh:
+		if err != nil {
+			return err
+		}
+	case <-statusCh:
+	}
+
 	if needCopy {
 		err = copyToContainer(assetPath, src, unpackerContainer.ID, dst)
 	}