build: Allow optional "nodeploy" tag to exclude deploy command from bin

Fixes #7826

Dockerfile

@@ -4,7 +4,7 @@
 
 FROM golang:1.15-alpine AS build
 
-# Optionally set HUGO_BUILD_TAGS to "extended" when building like so:
+# Optionally set HUGO_BUILD_TAGS to "extended" or "nodeploy" when building like so:
 #   docker build --build-arg HUGO_BUILD_TAGS=extended .
 ARG HUGO_BUILD_TAGS
 

commands/deploy.go

@@ -11,6 +11,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+// +build !nodeploy
+
 package commands
 
 import (

commands/nodeploy.go

@@ -0,0 +1,49 @@
+// Copyright 2019 The Hugo Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build nodeploy
+
+package commands
+
+import (
+	"errors"
+	"github.com/spf13/cobra"
+)
+
+var _ cmder = (*deployCmd)(nil)
+
+// deployCmd supports deploying sites to Cloud providers.
+type deployCmd struct {
+	*baseBuilderCmd
+}
+
+func (b *commandsBuilder) newDeployCmd() *deployCmd {
+	cc := &deployCmd{}
+
+	cmd := &cobra.Command{
+		Use:   "deploy",
+		Short: "Deploy your site to a Cloud provider.",
+		Long: `Deploy your site to a Cloud provider.
+
+See https://gohugo.io/hosting-and-deployment/hugo-deploy/ for detailed
+documentation.
+`,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return errors.New("build without HUGO_BUILD_TAGS=nodeploy to use this command")
+		},
+	}
+
+	cc.baseBuilderCmd = b.newBuilderBasicCmd(cmd)
+
+	return cc
+}

deploy/cloudfront.go

@@ -11,6 +11,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+// +build !nodeploy
+
 package deploy
 
 import (

deploy/deploy.go

@@ -11,6 +11,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+// +build !nodeploy
+
 package deploy
 
 import (

deploy/deployConfig.go

@@ -11,6 +11,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+// +build !nodeploy
+
 package deploy
 
 import (

deploy/deployConfig_test.go

@@ -11,6 +11,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+// +build !nodeploy
+
 package deploy
 
 import (

deploy/deploy_azure.go

@@ -11,7 +11,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-// +build !solaris
+// +build !solaris,!nodeploy
 
 package deploy
 

deploy/deploy_test.go

@@ -11,6 +11,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+// +build !nodeploy
+
 package deploy
 
 import (

deploy/google.go

@@ -11,6 +11,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+// +build !nodeploy
+
 package deploy
 
 import (

magefile.go

@@ -354,6 +354,7 @@ func buildFlags() []string {
 func buildTags() string {
 	// To build the extended Hugo SCSS/SASS enabled version, build with
 	// HUGO_BUILD_TAGS=extended mage install etc.
+	// To build without `hugo deploy` for smaller binary, use HUGO_BUILD_TAGS=nodeploy
 	if envtags := os.Getenv("HUGO_BUILD_TAGS"); envtags != "" {
 		return envtags
 	}