Add Dockerfile for MCP registry support

This Dockerfile enables the chrome-devtools-mcp server to be used
with Docker-based MCP registries. It:
- Uses Node.js 22 LTS with Chrome dependencies
- Installs Chrome Stable for Puppeteer
- Builds the TypeScript project
- Runs as non-root user for security
- Exposes the MCP server via stdio

Author: kgprs

Dockerfile

@@ -0,0 +1,65 @@
+# Use Node.js 22 LTS with Debian for Chrome compatibility
+FROM node:22-bookworm-slim
+
+# Install Chrome dependencies
+RUN apt-get update && apt-get install -y \
+    wget \
+    gnupg \
+    ca-certificates \
+    fonts-liberation \
+    libasound2 \
+    libatk-bridge2.0-0 \
+    libatk1.0-0 \
+    libatspi2.0-0 \
+    libcups2 \
+    libdbus-1-3 \
+    libdrm2 \
+    libgbm1 \
+    libgtk-3-0 \
+    libnspr4 \
+    libnss3 \
+    libwayland-client0 \
+    libxcomposite1 \
+    libxdamage1 \
+    libxfixes3 \
+    libxkbcommon0 \
+    libxrandr2 \
+    xdg-utils \
+    libu2f-udev \
+    libvulkan1 \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install Chrome Stable
+RUN wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | gpg --dearmor -o /usr/share/keyrings/googlechrome-linux-keyring.gpg \
+    && sh -c 'echo "deb [arch=amd64 signed-by=/usr/share/keyrings/googlechrome-linux-keyring.gpg] http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google.list' \
+    && apt-get update \
+    && apt-get install -y google-chrome-stable \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+
+# Copy package files
+COPY package*.json ./
+
+# Install dependencies
+RUN npm ci --omit=dev
+
+# Copy source files
+COPY . .
+
+# Build the TypeScript project
+RUN npm run build
+
+# Set environment to tell Puppeteer where Chrome is installed
+ENV PUPPETEER_EXECUTABLE_PATH=/usr/bin/google-chrome-stable
+
+# Run as non-root user for security
+RUN groupadd -r mcpuser && useradd -r -g mcpuser -G audio,video mcpuser \
+    && mkdir -p /home/mcpuser/Downloads \
+    && chown -R mcpuser:mcpuser /home/mcpuser \
+    && chown -R mcpuser:mcpuser /app
+
+USER mcpuser
+
+# Expose MCP server via stdio
+ENTRYPOINT ["node", "build/src/index.js"]