diff --git a/Dockerfile b/Dockerfile
index 4ceae22959..e168c3e6dc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -16,7 +16,7 @@ RUN apk add --no-cache \
     build-base \
     libc6-compat \
     npm && \
-    npm install -G autoprefixer postcss-cli
+    npm install -D autoprefixer postcss-cli
 
 ARG HUGO_VERSION
 
diff --git a/Makefile b/Makefile
index e8576459a4..58babc3627 100644
--- a/Makefile
+++ b/Makefile
@@ -65,7 +65,7 @@ container-image:
 		--build-arg HUGO_VERSION=$(HUGO_VERSION)
 
 container-build: module-check
-	$(CONTAINER_RUN) --read-only $(CONTAINER_IMAGE) hugo --minify
+	$(CONTAINER_RUN) --read-only --mount type=tmpfs,destination=/tmp,tmpfs-mode=01777 $(CONTAINER_IMAGE) sh -c "npm ci && hugo --minify"
 
 container-serve: module-check
 	$(CONTAINER_RUN) --read-only --mount type=tmpfs,destination=/tmp,tmpfs-mode=01777 -p 1313:1313 $(CONTAINER_IMAGE) hugo server --buildFuture --bind 0.0.0.0 --destination /tmp/hugo --cleanDestinationDir
diff --git a/README.md b/README.md
index 5966a17b36..c19aae489c 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,6 @@ You can run the website locally using Hugo (Extended version), or you can run it
 
 To use this repository, you need the following installed locally:
 
-- [yarn](https://yarnpkg.com/)
 - [npm](https://www.npmjs.com/)
 - [Go](https://golang.org/)
 - [Hugo (Extended version)](https://gohugo.io/)
@@ -28,9 +27,6 @@ cd website
 The Kubernetes website uses the [Docsy Hugo theme](https://github.com/google/docsy#readme). Even if you plan to run the website in a container, we strongly recommend pulling in the submodule and other development dependencies by running the following:
 
 ```
-# install dependencies
-yarn
-
 # pull in the Docsy submodule
 git submodule update --init --recursive --depth 1
 ```
@@ -53,6 +49,8 @@ Make sure to install the Hugo extended version specified by the `HUGO_VERSION` e
 To build and test the site locally, run:
 
 ```bash
+# install dependencies
+npm ci
 make serve
 ```