extract the docker NewClientWithOpts, and add connectionhelper for DOCKER_HOST set to ssh://remote (#207)

Signed-off-by: Sven Dowideit <SvenDowideit@home.org.au>

Co-authored-by: Casey Lee <cplee@nektos.com>

pkg/container/docker_images.go

@@ -5,17 +5,15 @@ import (
 
 	"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)
+	cli, err := GetDockerClient(ctx)
 	if err != nil {
 		return false, err
 	}
-	cli.NegotiateAPIVersion(ctx)
 
 	filters := filters.NewArgs()
 	filters.Add("reference", imageName)