Update tooling node version

README.md

@@ -4,14 +4,14 @@ These are the services that back our [Content API](https://developers.wellcomeco
 
 ![Architecture diagram](https://github.com/wellcomecollection/content-api/assets/4429247/b29a6bf5-f5af-426c-b827-550b84c5541c)
 
-### Services
+## Services
 
 - `/pipeline`: runs on a schedule, queries for updated content, transforms it and puts it into an index in the content ES cluster.
 - `/api`: queries the Elasticsearch index
 - `/webhook`: a Lambda handler exposed via a function URL for handling Prismic webhook events and publishing them to a EventBridge bus
 - `/unpublisher`: receives events published by the webhook, extracts document IDs from them and removes them from the ES index.
 
-### Developing
+## Developing
 
 - Deployment is all done in CI, see `.buildkite/pipeline.yml`
 - `husky` will set up a pre-commit hook for autoformatting when you first install dependencies

tooling.Dockerfile

@@ -1,5 +1,4 @@
-# TODO use node:20 and test
-FROM public.ecr.aws/docker/library/node:18
+FROM public.ecr.aws/docker/library/node:20
 
 # Install Terraform (for formatting)
 ARG TERRAFORM_VERSION=1.4.0
@@ -8,8 +7,8 @@ RUN wget -q -O /tmp/terraform.zip https://releases.hashicorp.com/terraform/${TER
 
 # Install AWS CLI (v2)
 RUN wget -q -O /tmp/awscliv2.zip https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip && \
-    unzip -q -o /tmp/awscliv2.zip -d /tmp/awscliv2 && \
-    /tmp/awscliv2/aws/install
+  unzip -q -o /tmp/awscliv2.zip -d /tmp/awscliv2 && \
+  /tmp/awscliv2/aws/install
 
 RUN apt-get update && apt-get install -y zip && apt-get clean