feat: enhance Dockerfile for Playwright (#6)

* feat: enhance Dockerfile for Playwright and add font support

- Install system dependencies for Playwright including Chromium and font packages.
- Configure Playwright to use the installed Chromium in Docker.
- Add a function to set the font family for Mermaid diagrams, supporting custom overrides and ensuring Chinese font compatibility.

* chore: add .dockerignore and optimize Dockerfile for cleaner builds

- Introduced .dockerignore to exclude unnecessary files from Docker context.
- Updated Dockerfile to streamline dependency installation and build process, including Playwright with system Chromium.

Author: 2niuhe

.dockerignore

@@ -0,0 +1,20 @@
+# Dependencies and build artifacts
+node_modules
+build
+dist
+
+# Development files
+.git
+.env*
+*.log
+
+# IDE and editor files
+.vscode
+.idea
+
+# Test and CI files
+.github
+test_*.js
+
+# Documentation
+README.md

Dockerfile

@@ -1,18 +1,16 @@
-FROM node:lts-alpine
+FROM node:lts-bookworm-slim
 
 WORKDIR /app
 
-# Copy package files
-COPY package*.json ./
-
-# Install dependencies
-RUN npm install --ignore-scripts
-
-# Copy application code
 COPY . .
 
-# Build the application
-RUN npm run build
+RUN npm install \
+    && npm run build \
+    && npx playwright install --with-deps chromium \
+    && apt-get clean \
+    && npm prune --omit=dev \
+    && npm cache clean --force \
+    && rm -rf /var/lib/apt/lists/* \
+    && rm -rf /var/cache/apt/*
 
-# Command will be provided by smithery.yaml
-CMD ["node", "build/index.js"]
+CMD ["node", "build/index.js"]