fix: docker check on osx incorrectly failing (#23)

internal/cmd/local/check.go

@@ -23,7 +23,7 @@ var dockerClient *docker.Docker
 func dockerInstalled(ctx context.Context) (docker.Version, error) {
 	var err error
 	if dockerClient == nil {
-		if dockerClient, err = docker.New(); err != nil {
+		if dockerClient, err = docker.New(ctx); err != nil {
 			pterm.Error.Println("Could not create Docker client")
 			return docker.Version{}, fmt.Errorf("%w: could not create client: %w", localerr.ErrDocker, err)
 		}

internal/cmd/local/local_install.go

@@ -62,7 +62,7 @@ func NewCmdInstall() *cobra.Command {
 					// only for kind do we need to check the existing port
 					if provider.Name == k8s.Kind {
 						if dockerClient == nil {
-							dockerClient, err = docker.New()
+							dockerClient, err = docker.New(cmd.Context())
 							if err != nil {
 								pterm.Error.Printfln("Could not connect to Docker daemon")
 								return fmt.Errorf("could not connect to docker: %w", err)

internal/local/cmd.go

@@ -582,7 +582,7 @@ func defaultHelm(kubecfg, kubectx string) (HelmClient, error) {
 		RestConfig: restCfg,
 	})
 	if err != nil {
-		return nil, fmt.Errorf("coud not create helm client: %w", err)
+		return nil, fmt.Errorf("could not create helm client: %w", err)
 	}
 
 	return helm, nil

internal/local/docker/docker.go

@@ -36,7 +36,7 @@ type Docker struct {
 }
 
 // New returns a new Docker type with a default Client implementation.
-func New() (*Docker, error) {
+func New(ctx context.Context) (*Docker, error) {
 	userHome, err := os.UserHomeDir()
 	if err != nil {
 		return nil, fmt.Errorf("could not determine user home directory: %w", err)
@@ -48,20 +48,21 @@ func New() (*Docker, error) {
 	switch runtime.GOOS {
 	case "darwin":
 		// on mac, sometimes the docker host isn't set correctly, if it fails check the home directory
-		dockerCli, err = client.NewClientWithOpts(append(dockerOpts, client.WithHost("unix:///var/run/docker.sock"))...)
+		dockerCli, err = createAndPing(ctx, "unix:///var/run/docker.sock", dockerOpts)
 		if err != nil {
-			// keep the original error, as we'll join with the next error (if another error occurs)
-			outerErr := err
-			// this works as the last WithHost call will win
-			dockerCli, err = client.NewClientWithOpts(append(dockerOpts, client.WithHost(fmt.Sprintf("unix:///%s/.docker/run/docker.sock", userHome)))...)
-			if err != nil {
-				err = fmt.Errorf("%w: %w", err, outerErr)
+			var err2 error
+			dockerCli, err2 = createAndPing(ctx, fmt.Sprintf("unix://%s/.docker/run/docker.sock", userHome), dockerOpts)
+			if err2 != nil {
+				return nil, fmt.Errorf("%w: could not create docker client: (%w, %w)", localerr.ErrDocker, err, err2)
 			}
+			// if we made it here, clear out the original error,
+			// as we were able to successfully connect on the second attempt
+			err = nil
 		}
 	case "windows":
-		dockerCli, err = client.NewClientWithOpts(append(dockerOpts, client.WithHost("npipe:////./pipe/docker_engine"))...)
+		dockerCli, err = createAndPing(ctx, "npipe:////./pipe/docker_engine", dockerOpts)
 	default:
-		dockerCli, err = client.NewClientWithOpts(append(dockerOpts, client.WithHost("unix:///var/run/docker.sock"))...)
+		dockerCli, err = createAndPing(ctx, "unix:///var/run/docker.sock", dockerOpts)
 	}
 
 	if err != nil {
@@ -71,6 +72,20 @@ func New() (*Docker, error) {
 	return &Docker{Client: dockerCli}, nil
 }
 
+// createAndPing attempts to create a docker client and ping it to ensure we can communicate
+func createAndPing(ctx context.Context, host string, opts []client.Opt) (*client.Client, error) {
+	dockerCli, err := client.NewClientWithOpts(append(opts, client.WithHost(host))...)
+	if err != nil {
+		return nil, fmt.Errorf("could not create docker client: %w", err)
+	}
+
+	if _, err := dockerCli.Ping(ctx); err != nil {
+		return nil, fmt.Errorf("could not ping docker client: %w", err)
+	}
+
+	return dockerCli, nil
+}
+
 // Version returns the version information from the underlying docker process.
 func (d *Docker) Version(ctx context.Context) (Version, error) {
 	ver, err := d.Client.ServerVersion(ctx)