feat: add Docker deployment with HAProxy and blue-green strategy

Dockerfile

@@ -0,0 +1,31 @@
+FROM node:24-slim
+
+ARG VERSION=0.0.0
+
+WORKDIR /app
+
+RUN apt-get update && apt-get install -y python3 make g++ curl net-tools && rm -rf /var/lib/apt/lists/*
+
+COPY package.json package-lock.json* ./
+
+RUN npm ci
+
+COPY . .
+
+RUN npx nuxt build
+
+ENV NUXT_HOST=0.0.0.0
+ENV NUXT_PORT=3000
+ENV NODE_ENV=production
+ENV NODE_PATH=/app/node_modules
+ENV APP_VERSION=${VERSION}
+ENV PUID=1000
+ENV PGID=1000
+
+RUN mkdir -p data && chown -R ${PUID}:${PGID} data && chown -R ${PUID}:${PGID} /app && chmod 755 /app data
+
+EXPOSE 3000
+
+USER ${PUID}:${PGID}
+
+CMD ["node", ".output/server/index.mjs"]