Refactor entrypoint

Signed-off-by: Bryan Frimin <bryan@getprobo.com>

cmd/probod-bootstrap/main.go

@@ -0,0 +1,44 @@
+// Copyright (c) 2025 Probo Inc <hello@getprobo.com>.
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+// probod-bootstrap generates a probod configuration file from environment variables.
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+
+	"go.probo.inc/probo/pkg/bootstrap"
+)
+
+func main() {
+	outputPath := flag.String("output", "/etc/probod/config.yml", "output path for the generated config file")
+	flag.Parse()
+
+	builder := bootstrap.NewBuilder(nil)
+
+	cfg, err := builder.Build()
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "error: %v\n", err)
+		os.Exit(1)
+	}
+
+	if err := bootstrap.WriteConfig(cfg, *outputPath); err != nil {
+		fmt.Fprintf(os.Stderr, "error: %v\n", err)
+		os.Exit(1)
+	}
+
+	fmt.Printf("Configuration file generated at: %s\n", *outputPath)
+}