# Build stage
FROM golang:1.21-alpine AS builder

WORKDIR /app

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

# Download dependencies
RUN go mod download

# Copy source code
COPY *.go ./

# Build the application
RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o gps-router .

# Final stage
FROM alpine:latest

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

WORKDIR /root/

# Copy the binary from builder stage
COPY --from=builder /app/gps-router .

# Create non-root user
RUN adduser -D -s /bin/sh gpsrouter
USER gpsrouter

EXPOSE 3069

CMD ["./gps-router"]