diff --git a/localnet/testgo/app.go b/localnet/testgo/app.go
index f88ab1a..0be4e6b 100644
--- a/localnet/testgo/app.go
+++ b/localnet/testgo/app.go
@@ -6,7 +6,6 @@ import (
 	"github.com/sei-protocol/build/pkg/localnet"
 	"github.com/sei-protocol/build/pkg/localnet/infra"
 	"github.com/sei-protocol/build/pkg/tools"
-	"github.com/sei-protocol/build/pkg/tools/docker"
 )
 
 // Config stores go app config.
@@ -21,7 +20,6 @@ func New(config Config) *infra.App {
 	return &infra.App{
 		RunAsUser: true,
 		Name:      config.Name,
-		Image:     "alpine:" + docker.AlpineVersion,
 		Volumes: []infra.Volume{
 			binVolume,
 		},
diff --git a/localnet/testrust/app.go b/localnet/testrust/app.go
index d23f62c..b9129c7 100644
--- a/localnet/testrust/app.go
+++ b/localnet/testrust/app.go
@@ -6,7 +6,6 @@ import (
 	"github.com/sei-protocol/build/pkg/localnet"
 	"github.com/sei-protocol/build/pkg/localnet/infra"
 	"github.com/sei-protocol/build/pkg/tools"
-	"github.com/sei-protocol/build/pkg/tools/docker"
 )
 
 // Config stores rust app config.
@@ -21,7 +20,6 @@ func New(config Config) *infra.App {
 	return &infra.App{
 		RunAsUser: true,
 		Name:      config.Name,
-		Image:     "alpine:" + docker.AlpineVersion,
 		Volumes: []infra.Volume{
 			binVolume,
 		},
diff --git a/pkg/localnet/infra/docker.go b/pkg/localnet/infra/docker.go
index f8f5497..0f1965e 100644
--- a/pkg/localnet/infra/docker.go
+++ b/pkg/localnet/infra/docker.go
@@ -196,7 +196,12 @@ func (d *Docker) prepareRunArgs(app *App) []string {
 		runArgs = append(runArgs, "--entrypoint", app.Entrypoint)
 	}
 
-	runArgs = append(runArgs, app.Image)
+	image := app.Image
+	if image == "" {
+		image = AlpineImage()
+	}
+
+	runArgs = append(runArgs, image)
 	if app.ArgsFunc != nil {
 		runArgs = append(runArgs, app.ArgsFunc()...)
 	}
diff --git a/pkg/localnet/infra/helpers.go b/pkg/localnet/infra/helpers.go
index 70ce55e..8b2a8f6 100644
--- a/pkg/localnet/infra/helpers.go
+++ b/pkg/localnet/infra/helpers.go
@@ -13,8 +13,14 @@ import (
 	"go.uber.org/zap"
 
 	"github.com/sei-protocol/build/pkg/retry"
+	"github.com/sei-protocol/build/pkg/tools/docker"
 )
 
+// AlpineImage returns the default docker image used to run containers.
+func AlpineImage() string {
+	return "alpine:" + docker.AlpineVersion
+}
+
 // WaitUntilHealthy waits until app is healthy or context expires.
 func WaitUntilHealthy(ctx context.Context, hFuncs map[string]func(ctx context.Context) error) error {
 	log := logger.Get(ctx)
diff --git a/pkg/tools/docker/tools.go b/pkg/tools/docker/docker.go
similarity index 100%
rename from pkg/tools/docker/tools.go
rename to pkg/tools/docker/docker.go