# Stage 1: Build
FROM golang:alpine AS builder
WORKDIR /build
COPY tolchain/ ./tolchain/
COPY a301_server/ ./a301_server/
WORKDIR /build/a301_server
RUN go mod download
RUN CGO_ENABLED=0 GOOS=linux go build -o server .

# Stage 2: Run
FROM alpine:latest
RUN apk --no-cache add tzdata ca-certificates curl
RUN mkdir -p /data/game
WORKDIR /app
COPY --from=builder /build/a301_server/server .
EXPOSE 8080
HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
  CMD curl -f http://localhost:8080/health || exit 1
CMD ["./server"]