FROM golang:alpine as builder
WORKDIR /app
RUN apk update && apk upgrade && apk add --no-cache ca-certificates
RUN update-ca-certificates
ADD telegram-bot.go /app/
ADD go.mod /app/
ADD go.sum /app/
RUN CGO_ENABLED=0 GOOS=linux go build -a -ldflags="-s -w" -installsuffix cgo -o app .

FROM scratch
COPY --from=builder /app/app .
COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
CMD ["./app"]