FROM golang:1.16-alpine AS builder RUN apk update && apk add --no-cache git && apk add -U --no-cache ca-certificates WORKDIR /app/ ADD go.mod go.sum ./ RUN go mod download ADD . . RUN GOOS=linux GOARCH=amd64 CGO_ENABLED=0 go build -ldflags="-w -s" -o tweetsvg . FROM scratch WORKDIR /app/ COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ COPY --from=builder /app/tweetsvg /app/tweetsvg ENTRYPOINT ["/app/tweetsvg"]