feat: support self-host docker build (#5506)

Test command: `docker compose -f ./.github/deployment/self-host/compose.yaml up`

.github/deployment/node/Dockerfile

@@ -1,6 +1,7 @@
 FROM node:18-bookworm-slim
 
 COPY ./packages/backend/server /app
+COPY ./packages/frontend/core/dist /app/static
 WORKDIR /app
 
 RUN apt-get update && \