Dockerfile

FROM golang:1.13.3 as builder
LABEL protos="0.0.1" \
      protos.installer.metadata.name="letsencrypt-certificate" \
      protos.installer.metadata.description="This applications provides SSL certificates using the letsencrypt.com service. " \
      protos.installer.metadata.capabilities="ResourceProvider,ResourceConsumer,InternetAccess,GetInformation" \
      protos.installer.metadata.requires="dns" \
      protos.installer.metadata.provides="certificate" \
      protos.installer.metadata.name="letsencrypt-certificate"

ADD . "/go/src/letsencrypt-certificate/"
WORKDIR "/go/src/letsencrypt-certificate/"
RUN GOOS=linux GOARCH=amd64 CGO_ENABLED=0 go build letsencrypt-certificate.go

FROM alpine:latest
LABEL protos="0.0.1" \
      protos.installer.metadata.name="letsencrypt-certificate" \
      protos.installer.metadata.description="This applications provides SSL certificates using the letsencrypt.com service. " \
      protos.installer.metadata.capabilities="ResourceProvider,ResourceConsumer,InternetAccess,GetInformation" \
      protos.installer.metadata.requires="dns" \
      protos.installer.metadata.provides="certificate" \
      protos.installer.metadata.name="letsencrypt-certificate"

RUN apk add ca-certificates
COPY --from=builder /go/src/letsencrypt-certificate/letsencrypt-certificate /usr/bin/
RUN chmod +x /usr/bin/letsencrypt-certificate

ENTRYPOINT ["/usr/bin/letsencrypt-certificate"]
CMD ["--loglevel", "debug", "--interval", "20", "--staging", "start"]