inspector/Dockerfile
cliffhall 070f02e85f review: set HOME explicitly + note healthcheck assumes --web
Follow-up on the re-review's two optional notes:

- Set `ENV HOME=/home/node` so the runtime-state dir (core/storage/store-io.ts
  resolves it from HOME) is explicit, rather than relying on the "." → WORKDIR
  fallback that happens to work because Docker doesn't set HOME on USER.
- Document that the HEALTHCHECK assumes the default --web mode; suggest
  `--no-healthcheck` for --cli/--tui runs (no web server to probe).

Re-verified: build ok, HOME=/home/node, runs as node (uid 1000), `/` → 200,
health → healthy.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BrihGWcrM9JGRyu41nzZYw
2026-07-11 09:47:25 -04:00

51 lines
2.3 KiB
Docker

# syntax=docker/dockerfile:1
# ---------------------------------------------------------------------------
# Build stage — install everything, build all clients, and pack the exact
# tarball npm would publish. `npm install` runs the root postinstall cascade
# (per-client installs, since v2 is not a workspace); `npm pack` runs `prepack`
# (`npm run build`) and emits `modelcontextprotocol-inspector-<version>.tgz`.
# ---------------------------------------------------------------------------
FROM node:22-slim AS builder
WORKDIR /build
COPY . .
RUN npm install && npm pack
# ---------------------------------------------------------------------------
# Runtime stage — install just the packed tarball (production deps only),
# yielding a clean global `mcp-inspector` bin: the same artifact a user gets
# from `npm i -g @modelcontextprotocol/inspector`. The package's postinstall
# early-exits under node_modules, and the tarball ships only each client's
# build/ output, so there is nothing to build here.
# ---------------------------------------------------------------------------
FROM node:22-slim AS runner
ENV NODE_ENV=production
COPY --from=builder /build/modelcontextprotocol-inspector-*.tgz /tmp/inspector.tgz
RUN npm install -g /tmp/inspector.tgz && rm /tmp/inspector.tgz
# Serve on all interfaces so the UI is reachable from outside the container, and
# never try to open a browser from inside it.
ENV HOST=0.0.0.0 \
CLIENT_PORT=6274 \
MCP_AUTO_OPEN_ENABLED=false
EXPOSE 6274
# Run as the non-root `node` user the base image ships. The inspector resolves
# its runtime-state dir (default catalog, OAuth token storage) from `HOME`
# (core/storage/store-io.ts), so set it explicitly to the node user's writable
# home and work from there.
ENV HOME=/home/node
USER node
WORKDIR /home/node
# Report readiness by probing the served SPA (`/` needs no auth). Uses Node's
# global fetch — no curl/wget in the slim image. Assumes the default `--web`
# mode; running `--cli`/`--tui` has no web server, so add `--no-healthcheck` to
# `docker run` for those.
HEALTHCHECK --interval=30s --timeout=5s --start-period=20s --retries=3 \
CMD node -e "fetch('http://127.0.0.1:'+(process.env.CLIENT_PORT||6274)+'/').then(r=>process.exit(r.ok?0:1)).catch(()=>process.exit(1))"
# Default to the web UI; override the args to run --cli / --tui.
ENTRYPOINT ["mcp-inspector"]
CMD ["--web"]