Initial scaffolding: module, directory structure, Makefile, linter config

cmd/mcrsrv/main.go

@@ -0,0 +1,56 @@
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/spf13/cobra"
+)
+
+var version = "dev"
+
+func main() {
+	root := &cobra.Command{
+		Use:     "mcrsrv",
+		Short:   "Metacircular Container Registry server",
+		Version: version,
+	}
+
+	root.AddCommand(serverCmd())
+	root.AddCommand(initCmd())
+	root.AddCommand(snapshotCmd())
+
+	if err := root.Execute(); err != nil {
+		os.Exit(1)
+	}
+}
+
+func serverCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "server",
+		Short: "Start the registry server",
+		RunE: func(_ *cobra.Command, _ []string) error {
+			return fmt.Errorf("not implemented")
+		},
+	}
+}
+
+func initCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "init",
+		Short: "First-time setup (create directories, example config)",
+		RunE: func(_ *cobra.Command, _ []string) error {
+			return fmt.Errorf("not implemented")
+		},
+	}
+}
+
+func snapshotCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "snapshot",
+		Short: "Database backup via VACUUM INTO",
+		RunE: func(_ *cobra.Command, _ []string) error {
+			return fmt.Errorf("not implemented")
+		},
+	}
+}