add Docker support for running caldav-mcp

Introduce a multi-stage Docker build and runtime image so the server can be built and launched consistently across environments, and document build/run usage in README.

.dockerignore

@@ -0,0 +1,10 @@
+node_modules
+dist
+.git
+.gitignore
+npm-debug.log
+README.md
+docs
+tests
+.env
+.env.*

Dockerfile

@@ -0,0 +1,24 @@
+FROM node:20-bookworm-slim AS builder
+
+WORKDIR /app
+
+COPY package*.json ./
+RUN npm ci
+
+COPY tsconfig.json ./
+COPY src ./src
+RUN npm run build
+
+FROM node:20-bookworm-slim AS runtime
+
+WORKDIR /app
+ENV NODE_ENV=production
+
+COPY package*.json ./
+RUN npm ci --omit=dev
+
+COPY --from=builder /app/dist ./dist
+
+EXPOSE 3000
+
+CMD ["node", "dist/index.js"]

README.md

@@ -40,6 +40,22 @@ npm run build
 npm test
 ```
 
+## Docker
+
+Build the image:
+
+```bash
+docker build -t caldav-mcp .
+```
+
+Run the container:
+
+```bash
+docker run --rm -p 3000:3000 --env-file .env caldav-mcp
+```
+
+The server listens on port `3000` in the container.
+
 ## MCP Tools
 
 - `caldav_discover_principal`