# Multi-stage build for Go Sidecar
FROM golang:1.24-alpine AS builder

# Install build dependencies
RUN apk add --no-cache git ca-certificates tzdata

# Set work directory
WORKDIR /app

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

# Download dependencies
RUN go mod download

# Copy source code
COPY cmd/ ./cmd/
COPY pkg/ ./pkg/

# Build the binaries
RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o demo-server ./cmd/demo-server
RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o sidecar ./cmd/sidecar
RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o test-rdma ./cmd/test-rdma

# Runtime stage
FROM alpine:3.18

# Install runtime dependencies
RUN apk --no-cache add ca-certificates curl jq

# Create app user
RUN addgroup -g 1001 appgroup && \
    adduser -D -s /bin/sh -u 1001 -G appgroup appuser

# Set work directory
WORKDIR /app

# Copy binaries from builder stage
COPY --from=builder /app/demo-server .
COPY --from=builder /app/sidecar .
COPY --from=builder /app/test-rdma .

# Change ownership
RUN chown -R appuser:appgroup /app
USER appuser

# Expose the demo server port
EXPOSE 8081

# Health check
HEALTHCHECK --interval=10s --timeout=5s --start-period=15s --retries=3 \
    CMD curl -f http://localhost:8081/health || exit 1

# Default command (demo server)
CMD ["./demo-server", "--port", "8081", "--enable-rdma", "--debug"]