FROM golang:1.21-alpine AS builder

WORKDIR /app

# Copy go mod files
COPY go.mod ./
RUN go mod download

# Copy source code
COPY . .

# Build
RUN CGO_ENABLED=0 GOOS=linux go build -ldflags="-s -w" -o gateway main.go

# Final stage
FROM alpine:latest

RUN apk --no-cache add ca-certificates

WORKDIR /root/

COPY --from=builder /app/gateway .

EXPOSE 8080

CMD ["./gateway"]
