fix(docs): remove corepack from docusaurus image build that is not available in latest Node

website/Dockerfile

@@ -1,10 +1,8 @@
 # Stage 1: Base image.
 ## Start with a base image containing NodeJS so we can build Docusaurus.
 FROM node:lts-alpine AS base
-## Disable colour output from yarn to make logs easier to read.
+## Disable colour output to make logs easier to read.
 ENV FORCE_COLOR=0
-## Enable corepack.
-RUN corepack enable
 ## Set the working directory to `/opt/docusaurus`.
 WORKDIR /opt/docusaurus
 
@@ -14,7 +12,7 @@ FROM base AS prod
 WORKDIR /opt/docusaurus
 ## Copy over the source code.
 COPY . /opt/docusaurus/
-## Install dependencies with `--immutable` to ensure reproducibility.
+## Install dependencies from the lockfile to ensure reproducibility.
 RUN npm ci
 ## Build the static site.
 RUN npm run build