MinIO CLI and Releaser. (#31)

* MinIO CLI and Releaser.

* Fix goreleaser

* Build docker properly. tags for kqueue on mac

* Dockerfile for release

* Fix docker release

cmd/mcs/server.go

@@ -0,0 +1,86 @@
+// This file is part of MinIO Console Server
+// Copyright (c) 2020 MinIO, Inc.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package main
+
+import (
+	"flag"
+	"log"
+	"os"
+
+	"github.com/go-openapi/loads"
+	"github.com/jessevdk/go-flags"
+	"github.com/minio/cli"
+	"github.com/minio/m3/mcs/restapi"
+	"github.com/minio/m3/mcs/restapi/operations"
+)
+
+// starts the server
+var serverCmd = cli.Command{
+	Name:    "server",
+	Aliases: []string{"srv"},
+	Usage:   "starts mcs server",
+	Action:  startServer,
+	Flags: []cli.Flag{
+		cli.IntFlag{
+			Name:  "port",
+			Value: 9090,
+			Usage: "Server port",
+		},
+	},
+}
+
+// starts the controller
+func startServer(ctx *cli.Context) error {
+	swaggerSpec, err := loads.Embedded(restapi.SwaggerJSON, restapi.FlatSwaggerJSON)
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	api := operations.NewMcsAPI(swaggerSpec)
+	server := restapi.NewServer(api)
+	defer server.Shutdown()
+
+	parser := flags.NewParser(server, flags.Default)
+	parser.ShortDescription = "MinIO Console Server"
+	parser.LongDescription = swaggerSpec.Spec().Info.Description
+	server.ConfigureFlags()
+	for _, optsGroup := range api.CommandLineOptionsGroups {
+		_, err := parser.AddGroup(optsGroup.ShortDescription, optsGroup.LongDescription, optsGroup.Options)
+		if err != nil {
+			log.Fatalln(err)
+		}
+	}
+
+	if _, err := parser.Parse(); err != nil {
+		code := 1
+		if fe, ok := err.(*flags.Error); ok {
+			if fe.Type == flags.ErrHelp {
+				code = 0
+			}
+		}
+		os.Exit(code)
+	}
+	// Parse flags
+	flag.Parse()
+	server.ConfigureAPI()
+	server.Port = ctx.Int("port")
+
+	if err := server.Serve(); err != nil {
+		log.Fatalln(err)
+	}
+	return nil
+}