Convenience images for running Node.js Circle CI builds

List of image tags:

pnpm (Corepack) and Bun

Both tools are installed on PATH for the default circleci user (CircleCI’s Node image convention).

pnpm — default package manager

• How: Corepack is enabled with --install-directory ~/bin (i.e. /home/circleci/bin on this image).
• Why that directory: Image layers run as circleci, not root. A plain corepack enable wants to write shims under /usr/local/bin, which is root-owned, so enabling Corepack for pnpm/yarn into ~/bin avoids permission errors without relying on sudo in that step.
• What you run: pnpm / pnpx from the pruned monorepo as usual. Version follows Corepack’s resolution (see packageManager in your repo).

Bun — optional TypeScript / tooling runtime

• How: Official Bun install with BUN_INSTALL=/usr/local/bun; the directory is created and chown’d to circleci so the runtime can live under a fixed /usr/local/... path while still being writable by the job user.
• Why not ~/bin: Keeps Bun separate from Corepack’s shims in ~/bin, avoids name clashes, and gives one obvious prefix (/usr/local/bun) for the binary and caches.
• What you run: e.g. bun ./scripts/ci-task.ts without tsc or node --experimental-strip-types. Pin is BUN_VERSION in 24/Dockerfile (Renovate: oven-sh/bun).

Bun does not replace pnpm for installing workspace dependencies unless your pipeline calls bun explicitly.

This image is built in Dockerhub