# Stage 1: Build
FROM rust:latest as builder

# 1. Tools installieren
RUN cargo install --locked trunk
RUN cargo install --locked wasm-bindgen-cli

# 2. WICHTIG: Das fehlte! Wir müssen Rust beibringen, WebAssembly zu bauen.
RUN rustup target add wasm32-unknown-unknown

WORKDIR /app
COPY . .

# 3. Bauen
RUN trunk build --release

# Stage 2: Serve (Nginx)
FROM nginx:alpine
COPY --from=builder /app/dist /usr/share/nginx/html
EXPOSE 80
CMD ["nginx", "-g", "daemon off;"]