diff --git a/cmd/atmosphere-ci/image.go b/cmd/atmosphere-ci/image.go
new file mode 100644
index 0000000..492d2b9
--- /dev/null
+++ b/cmd/atmosphere-ci/image.go
@@ -0,0 +1,14 @@
+package main
+
+import (
+	"github.com/spf13/cobra"
+)
+
+var imageCmd = &cobra.Command{
+	Use:   "image",
+	Short: "Image sub-commands",
+}
+
+func init() {
+	rootCmd.AddCommand(imageCmd)
+}
diff --git a/cmd/atmosphere-ci/image_repo.go b/cmd/atmosphere-ci/image_repo.go
new file mode 100644
index 0000000..2ab4d4a
--- /dev/null
+++ b/cmd/atmosphere-ci/image_repo.go
@@ -0,0 +1,14 @@
+package main
+
+import (
+	"github.com/spf13/cobra"
+)
+
+var imageRepoCmd = &cobra.Command{
+	Use:   "repo",
+	Short: "Image repository sub-commands",
+}
+
+func init() {
+	imageCmd.AddCommand(imageRepoCmd)
+}
diff --git a/cmd/atmosphere-ci/image_repo_sync.go b/cmd/atmosphere-ci/image_repo_sync.go
new file mode 100644
index 0000000..e4f9667
--- /dev/null
+++ b/cmd/atmosphere-ci/image_repo_sync.go
@@ -0,0 +1,31 @@
+package main
+
+import (
+	"context"
+
+	log "github.com/sirupsen/logrus"
+	"github.com/spf13/cobra"
+	"github.com/vexxhost/atmosphere/internal/pkg/image_repositories"
+)
+
+var (
+	imageRepoSyncCmd = &cobra.Command{
+		Use:   "sync [project]",
+		Short: "Sync image repository",
+		Args:  cobra.MinimumNArgs(1),
+
+		Run: func(cmd *cobra.Command, args []string) {
+			ctx := context.TODO()
+
+			repo := image_repositories.NewImageRepository(args[0])
+			err := repo.Synchronize(ctx)
+			if err != nil {
+				log.Panic(err)
+			}
+		},
+	}
+)
+
+func init() {
+	imageRepoCmd.AddCommand(imageRepoSyncCmd)
+}
diff --git a/cmd/atmosphere-ci/main.go b/cmd/atmosphere-ci/main.go
new file mode 100644
index 0000000..48e4f2e
--- /dev/null
+++ b/cmd/atmosphere-ci/main.go
@@ -0,0 +1,20 @@
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/spf13/cobra"
+)
+
+var rootCmd = &cobra.Command{
+	Use:   "atmosphere-ci",
+	Short: "CLI tools for Atmosphere CI",
+}
+
+func main() {
+	if err := rootCmd.Execute(); err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+}