CI: move grabpl package command to pkg/build (#55651)

* add grabpl package

* update .drone.yml

* resolve lint errors

pkg/build/cmd/main.go

@@ -124,6 +124,19 @@ func main() {
 			Usage:  "Exports version in dist/grafana.version",
 			Action: ExportVersion,
 		},
+		{
+			Name:      "package",
+			Usage:     "Package one or more Grafana variants",
+			ArgsUsage: "[version]",
+			Action:    ArgCountWrapper(1, Package),
+			Flags: []cli.Flag{
+				&jobsFlag,
+				&variantsFlag,
+				&editionFlag,
+				&buildIDFlag,
+				&signFlag,
+			},
+		},
 		{
 			Name:   "store-storybook",
 			Usage:  "Integrity check for storybook build",

pkg/build/cmd/package.go

@@ -0,0 +1,73 @@
+package main
+
+import (
+	"context"
+	"log"
+	"strings"
+
+	"github.com/grafana/grafana/pkg/build/config"
+	"github.com/grafana/grafana/pkg/build/gpg"
+	"github.com/grafana/grafana/pkg/build/packaging"
+	"github.com/grafana/grafana/pkg/build/syncutil"
+	"github.com/urfave/cli/v2"
+)
+
+func Package(c *cli.Context) error {
+	metadata, err := GenerateMetadata(c)
+	if err != nil {
+		return err
+	}
+
+	edition := config.Edition(c.String("edition"))
+
+	releaseMode, err := metadata.GetReleaseMode()
+	if err != nil {
+		return cli.NewExitError(err.Error(), 1)
+	}
+
+	releaseModeConfig, err := config.GetBuildConfig(metadata.ReleaseMode.Mode)
+	if err != nil {
+		return cli.NewExitError(err.Error(), 1)
+	}
+
+	cfg := config.Config{
+		NumWorkers: c.Int("jobs"),
+	}
+	if err := gpg.LoadGPGKeys(&cfg); err != nil {
+		return cli.Exit(err, 1)
+	}
+	defer gpg.RemoveGPGFiles(cfg)
+
+	ctx := context.Background()
+
+	variantStrs := strings.Split(c.String("variants"), ",")
+	variants := []config.Variant{}
+	for _, varStr := range variantStrs {
+		if varStr == "" {
+			continue
+		}
+
+		variants = append(variants, config.Variant(varStr))
+	}
+
+	if len(variants) == 0 {
+		variants = config.AllVariants
+	}
+
+	log.Printf("Packaging Grafana version %q, version mode %s, %s edition, variants %s", metadata.GrafanaVersion, releaseMode.Mode,
+		edition, strings.Join(variantStrs, ","))
+
+	if err := gpg.Import(cfg); err != nil {
+		return cli.Exit(err, 1)
+	}
+
+	p := syncutil.NewWorkerPool(cfg.NumWorkers)
+	defer p.Close()
+
+	if err := packaging.PackageGrafana(ctx, metadata.GrafanaVersion, ".", cfg, edition, variants, releaseModeConfig.PluginSignature.Sign, p); err != nil {
+		return cli.Exit(err, 1)
+	}
+
+	log.Println("Successfully packaged Grafana!")
+	return nil
+}