add docker

Dockerfile

@@ -0,0 +1,27 @@
+# syntax=docker/dockerfile:1
+
+FROM node:22-alpine AS base
+ENV PNPM_HOME=/pnpm
+ENV PATH=$PNPM_HOME:$PATH
+RUN corepack enable
+
+FROM base AS build
+WORKDIR /app
+
+COPY package.json pnpm-lock.yaml ./
+RUN pnpm install --frozen-lockfile
+
+COPY . .
+RUN pnpm build
+
+FROM node:22-alpine AS runner
+WORKDIR /app
+
+ENV NODE_ENV=production
+ENV HOST=0.0.0.0
+ENV PORT=3000
+
+COPY --from=build /app/.output ./.output
+
+EXPOSE 3000
+CMD ["node", ".output/server/index.mjs"]