act/container/docker_images.go
2019-02-18 21:12:35 -08:00

33 lines
766 B
Go

package container
import (
"context"
"github.com/docker/docker/api/types"
"github.com/docker/docker/api/types/filters"
"github.com/docker/docker/client"
)
// ImageExistsLocally returns a boolean indicating if an image with the
// requested name (and tag) exist in the local docker image store
func ImageExistsLocally(ctx context.Context, imageName string) (bool, error) {
cli, err := client.NewClientWithOpts(client.FromEnv)
if err != nil {
return false, err
}
cli.NegotiateAPIVersion(ctx)
filters := filters.NewArgs()
filters.Add("reference", imageName)
imageListOptions := types.ImageListOptions{
Filters: filters,
}
images, err := cli.ImageList(ctx, imageListOptions)
if err != nil {
return false, err
}
return len(images) > 0, nil
}