feat(deploy): add Docker full-stack deployment and server pack scripts

Enable one-click production deploy via docker-compose.prod.yml, with deployment docs and zip packaging for Baota upload.

Co-authored-by: Cursor <cursoragent@cursor.com>

docker/admin/Dockerfile

@@ -0,0 +1,28 @@
+FROM node:20-alpine AS base
+ENV PNPM_HOME="/pnpm"
+ENV PATH="$PNPM_HOME:$PATH"
+RUN corepack enable
+
+FROM base AS deps
+WORKDIR /app
+COPY package.json pnpm-lock.yaml pnpm-workspace.yaml ./
+COPY apps/api/package.json apps/api/
+COPY apps/player/package.json apps/player/
+COPY apps/admin/package.json apps/admin/
+COPY packages/shared/package.json packages/shared/
+RUN pnpm install --frozen-lockfile
+
+FROM base AS builder
+WORKDIR /app
+COPY --from=deps /app/node_modules ./node_modules
+COPY --from=deps /app/apps/api/node_modules ./apps/api/node_modules
+COPY --from=deps /app/apps/player/node_modules ./apps/player/node_modules
+COPY --from=deps /app/apps/admin/node_modules ./apps/admin/node_modules
+COPY --from=deps /app/packages/shared/node_modules ./packages/shared/node_modules
+COPY . .
+RUN pnpm --filter @thebet365/admin build
+
+FROM nginx:1.27-alpine
+COPY docker/nginx/admin.conf /etc/nginx/conf.d/default.conf
+COPY --from=builder /app/apps/admin/dist /usr/share/nginx/html
+EXPOSE 80