FROM node:20-slim

RUN corepack enable && corepack prepare pnpm@10.10.0 --activate

WORKDIR /app/frontend

COPY frontend/package.json frontend/pnpm-lock.yaml ./
RUN pnpm install --frozen-lockfile || (echo "WARN: frozen-lockfile failed, falling back to pnpm install" && pnpm install)

COPY frontend/ .

# Allow Docker internal hostnames (e.g. "frontend") to pass Vite's host check.
# Wrap the original config instead of sed-patching it — survives reformats.
RUN mv vite.config.js vite.config.original.js && \
    echo 'import config from "./vite.config.original.js";\
config.server = { ...config.server, allowedHosts: true };\
export default config;' > vite.config.js

ENV VITE_API_BASE=http://worker:8787

EXPOSE 5173

CMD ["pnpm", "exec", "vite", "--port", "5173", "--host", "0.0.0.0"]