fix: simplify Docker build for Hugging Face

Dockerfile

@@ -1,19 +1,13 @@
 FROM mcr.microsoft.com/playwright:v1.60.0-noble
 
-RUN useradd -m -u 1000 user
-
-ENV HOME=/home/user
 ENV PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD=1
 
-WORKDIR /home/user/app
+WORKDIR /app
 
 COPY package*.json ./
 RUN npm install --omit=dev --ignore-scripts --no-audit --no-fund
 
 COPY . .
-RUN chown -R user:user /home/user/app
-
-USER user
 
 ENV NODE_ENV=production
 ENV HOST=0.0.0.0