# Build stage
FROM golang:1.21-alpine AS builder

WORKDIR /app
COPY go.mod go.sum ./
RUN go mod download

COPY . .
RUN CGO_ENABLED=0 GOOS=linux go build -o whatsapp-sender .

# Runtime stage
FROM alpine:latest

WORKDIR /app
COPY --from=builder /app/whatsapp-sender .
COPY --from=builder /app/public ./public

EXPOSE 3002

CMD ["./whatsapp-sender"]