# Build Stage
FROM golang:1.23-alpine AS build

WORKDIR /app

# Copy go mod files
COPY go.mod go.sum* ./

# Download dependencies
RUN go mod download

# Copy source code
COPY *.go ./

# Build the binary
RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o llm-service .

# Runtime Stage
FROM alpine:latest

RUN apk --no-cache add ca-certificates curl

WORKDIR /root/

# Copy the binary from build stage
COPY --from=build /app/llm-service .

# Expose port
EXPOSE 8080

# Health check
HEALTHCHECK --interval=30s --timeout=10s --retries=3 \
  CMD curl -f http://localhost:8080/health || exit 1

# Run the binary
CMD ["./llm-service"]