cea22d86b8Closes #1795. Enforce localhost-only binding in code (the "never 0.0.0.0" rule was only a spec note): refuse an all-interfaces HOST — across every spelling the OS binds as the wildcard (inet_aton decimal/octal/hex, IPv6, IPv4-mapped, zone-scoped, IDNA/Unicode) — unless DANGEROUSLY_BIND_ALL_INTERFACES=true (Docker's sanctioned opt-in). Fixes the reported stdio-connect 403 by expanding the default loopback origin allow-list to all three interchangeable forms. Hardening surfaced across an extended review: closes an IDNA/fullwidth wildcard bypass, a blank-ALLOWED_ORIGINS fail-open, and the CLI/TUI OAuth-callback wildcard bind (loopback-only now, RFC 8252); canonicalizes the origin allow-list the way a browser does; derives frame-ancestors from the real embedder list (IPv6-literal exclusion verified in headless Chromium); strictPort on all three bind points; and preserves the CLI exit-code map + JSON envelope through the mcp-inspector --cli launcher path. Shared host normalization lives in core/node/hostUrl.ts. Docs + tests + smokes throughout. 🤖 Generated with [Claude Code](https://claude.com/claude-code)
54 lines
2.6 KiB
Docker
54 lines
2.6 KiB
Docker
# syntax=docker/dockerfile:1
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# ---------------------------------------------------------------------------
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# Build stage — install everything, build all clients, and pack the exact
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# tarball npm would publish. `npm install` runs the root postinstall cascade
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# (per-client installs, since v2 is not a workspace); `npm pack` runs `prepack`
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# (`npm run build`) and emits `modelcontextprotocol-inspector-<version>.tgz`.
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# ---------------------------------------------------------------------------
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FROM node:22-slim AS builder
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WORKDIR /build
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COPY . .
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RUN npm install && npm pack
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# ---------------------------------------------------------------------------
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# Runtime stage — install just the packed tarball (production deps only),
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# yielding a clean global `mcp-inspector` bin: the same artifact a user gets
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# from `npm i -g @modelcontextprotocol/inspector`. The package's postinstall
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# early-exits under node_modules, and the tarball ships only each client's
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# build/ output, so there is nothing to build here.
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# ---------------------------------------------------------------------------
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FROM node:22-slim AS runner
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ENV NODE_ENV=production
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COPY --from=builder /build/modelcontextprotocol-inspector-*.tgz /tmp/inspector.tgz
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RUN npm install -g /tmp/inspector.tgz && rm /tmp/inspector.tgz
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# Serve on all interfaces so the UI is reachable from outside the container, and
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# never try to open a browser from inside it. Binding 0.0.0.0 is refused by
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# default (it exposes the process-spawning backend to the network); a container
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# is the sanctioned exception, so opt in explicitly via DANGEROUSLY_BIND_ALL_INTERFACES.
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ENV HOST=0.0.0.0 \
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DANGEROUSLY_BIND_ALL_INTERFACES=true \
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CLIENT_PORT=6274 \
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MCP_AUTO_OPEN_ENABLED=false
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EXPOSE 6274
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# Run as the non-root `node` user the base image ships. The inspector resolves
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# its runtime-state dir (default catalog, OAuth token storage) from `HOME`
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# (core/storage/store-io.ts), so set it explicitly to the node user's writable
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# home and work from there.
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ENV HOME=/home/node
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USER node
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WORKDIR /home/node
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# Report readiness by probing the served SPA (`/` needs no auth). Uses Node's
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# global fetch — no curl/wget in the slim image. Assumes the default `--web`
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# mode; running `--cli`/`--tui` has no web server, so add `--no-healthcheck` to
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# `docker run` for those.
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HEALTHCHECK --interval=30s --timeout=5s --start-period=20s --retries=3 \
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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))"
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# Default to the web UI; override the args to run --cli / --tui.
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ENTRYPOINT ["mcp-inspector"]
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CMD ["--web"]
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