Build config: upgrade Hugo and Node, and other cleanup (grpc#629)

Author: chalin

.nvmrc

@@ -0,0 +1 @@
+lts/*

Makefile

@@ -1,5 +1,3 @@
-HUGO_VERSION =  0.79.0
-
 DRAFT_ARGS = --buildDrafts --buildFuture
 BUILD_ARGS = --minify
 ifeq (draft, $(or $(findstring draft,$(HEAD)),$(findstring draft,$(BRANCH))))

README.md

@@ -6,8 +6,14 @@ The [grpc.io][] site, built using [Hugo][] and hosted on [Netlify][].
 
 ### 1. Install the following tools
 
-- **[Hugo, extended version][hugo-install]**
-- **[nvm][]**, the Node Version Manager
+- **[Hugo, extended edition][hugo-install]**; match the version specified in
+  [netlify.toml](netlify.toml)
+- **Node**, the latest [LTS release][]. Like Netlify, we use **[nvm][]**, the
+  Node Version, to install and manage Node versions:
+  ```console
+  $ nvm install --lts
+  $ nvm use --lts
+  ```
 
 ### 2. Clone this repo _and_ its submodules
 
@@ -138,6 +144,7 @@ returned from `/grpc` links are false negatives that you can ignore.
 [grpc.io]: https://grpc.io
 [Hugo]: https://gohugo.io
 [hugo-install]: https://gohugo.io/getting-started/installing
+[LTS release]: https://nodejs.org/en/about/releases/
 [Netlify]: https://netlify.com
 [Netlify dev]: https://www.netlify.com/products/dev
 [Netlify gRPC Team dashboard]: https://app.netlify.com/teams/grpc/overview

netlify.toml

@@ -3,8 +3,7 @@ publish = "public"
 command = "git submodule update --init --recursive --depth 1 && make production-build"
 
 [build.environment]
-HUGO_VERSION = "0.79.0"
-NODE_VERSION = "12"
+HUGO_VERSION = "0.80.0"
 
 [context.branch-deploy]
 command = "git submodule update --init --recursive --depth 1 && make preview-build"

package.json

@@ -1,7 +1,7 @@
 {
   "devDependencies": {
     "autoprefixer": "^9.8.6",
-    "netlify-cli": "^3.4.8",
+    "netlify-cli": "^3.5.0",
     "postcss-cli": "^7.1.2"
   }
 }