Add Docker support (#220)

Dockerfile

@@ -0,0 +1,22 @@
+FROM node:22-bookworm-slim
+
+# Set the working directory
+WORKDIR /app
+
+# Copy package.json and package-lock.json at this stage to leverage the build cache
+COPY package*.json ./
+
+# Install dependencies
+RUN npm ci
+
+# Install chromium and its dependencies, but only for headless mode
+RUN npx -y playwright install --with-deps --only-shell chromium
+
+# Copy the rest of the app
+COPY . .
+
+# Build the app
+RUN npm run build
+
+# Run in headless and only with chromium (other browsers need more dependencies not included in this image)
+ENTRYPOINT ["node", "cli.js", "--headless", "--browser", "chromium"]