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excalidraw-mcp-sentinel/Dockerfile
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Sanjib Devnathandsanjibdevnathlabs 63209f9d5a feat: add test suite, CI/CD pipeline, setup wizard, and upstream feature ports (#6)
Establish comprehensive quality infrastructure for a project that previously
had zero tests, enabling confident refactoring and community contributions
with automated guardrails. Port upstream enhancements for font normalization,
image element support, and arrow binding preservation.

🏗️ Testing infrastructure:
- Unit tests for SQLite persistence layer and element validation helpers
- Integration tests for REST API, WebSocket broadcast, and arrow binding
- E2E tests with Playwright for canvas rendering and real-time sync
- Vitest + Playwright configuration with proper isolation

👷 CI/CD pipeline:
- Auto-versioning from conventional commits on push to main
- Auto-publish to NPM and Docker Hub on GitHub release
- Matrix testing across Node 18/20/22 with pinned dependencies
- Docker health check with diagnostic logging on failure
- Preserve rollup status checks for branch protection gates

📦 Developer experience:
- Interactive setup wizard for first-time configuration
- Canvas clear confirmation and scene description tools
- Frontend helpers extracted for testability

🔧 Upstream feature ports:
- Font family normalization (string names to numeric IDs)
- Image element support with file management API
- Arrow binding preservation through server round-trips
- Vite config fix for font subsetting worker chunk names
- Idempotent database initialization for standalone Docker mode

🐛 Docker fixes:
- Set EXCALIDRAW_DB_PATH in both Dockerfiles to writable /app/data/
- Make initDb() idempotent and closeDb() reset-safe for test isolation

🎯 Provides the safety net needed for rapid iteration — every PR is
validated across 120 test cases before merge, and releases are fully
automated from commit to published package.

Co-authored-by: sanjibdevnathlabs <devnath.sanjib@gmail.com>
2026-03-13 12:08:07 +05:30

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Docker

# Dockerfile for MCP Excalidraw Server
# Builds the MCP server with SQLite persistence
# Stage 1: Build backend (TypeScript compilation + native modules)
FROM node:18-slim AS builder
RUN apt-get update && apt-get install -y python3 make g++ && rm -rf /var/lib/apt/lists/*
WORKDIR /app
COPY package*.json ./
RUN --mount=type=cache,target=/root/.npm npm ci
COPY src ./src
COPY tsconfig.json ./
RUN npm run build:server
# Stage 2: Production MCP Server
FROM node:18-slim AS production
RUN apt-get update && apt-get install -y python3 make g++ && rm -rf /var/lib/apt/lists/*
RUN addgroup --system --gid 1001 nodejs && \
adduser --system --uid 1001 --gid 1001 nodejs
WORKDIR /app
COPY package*.json ./
RUN --mount=type=cache,target=/root/.npm npm ci --omit=dev
# Remove build tools after native modules are compiled
RUN apt-get purge -y python3 make g++ && apt-get autoremove -y
COPY --from=builder /app/dist ./dist
RUN mkdir -p /app/data && chown -R nodejs:nodejs /app
USER nodejs
ENV NODE_ENV=production
ENV EXPRESS_SERVER_URL=http://localhost:3000
ENV ENABLE_CANVAS_SYNC=true
ENV EXCALIDRAW_DB_PATH=/app/data/excalidraw.db
CMD ["node", "dist/index.js"]
LABEL org.opencontainers.image.source="https://github.com/sanjibdevnathlabs/mcp-excalidraw-local"
LABEL org.opencontainers.image.description="MCP Excalidraw Server - Model Context Protocol for AI agents (with SQLite persistence & multi-tenancy)"
LABEL org.opencontainers.image.licenses="MIT"