Add pnpm to builder image

Dockerfile

@@ -3,6 +3,7 @@ FROM debian:bookworm
 ARG KUBE_RELEASE=v1.30.2
 ARG YQ_VERSION=v4.44.2
 ARG NODE_VERSION=20.x
+ARG PNPM_VERSION=v9.5.0
 
 RUN set -eux; \
 	apt-get update; \
@@ -35,6 +36,8 @@ RUN set -eux; \
 	; \
 	curl --silent --location "https://deb.nodesource.com/setup_$NODE_VERSION" | bash; \
 	apt-get install -y --no-install-recommends nodejs; \
+	corepack install --global pnpm@$PNPM_VERSION; \
+	corepack enable pnpm; \
 	rm -rf /var/lib/apt/lists/*
 
 # References:

Readme.md

@@ -9,5 +9,6 @@ Common docker image used for running application builds, CI pipelines, and deplo
 - `git`
 - `kubectl`
 - `node`
+- `pnpm`
 - `ssh`
 - `yq` - https://github.com/mikefarah/yq