##### this stage will download latest tarball

FROM alpine:latest AS prep

ARG HUGO_ARCH=amd64

RUN \
    apk --no-cache upgrade && \
    apk --no-cache add curl jq && \
    LATEST_RELEASE=$(curl -L -s https://api.github.com/repos/gohugoio/hugo/releases/latest | jq -r '.tag_name' | sed 's/^v//' ) && \
    echo "Using hugo release: ${LATEST_RELEASE}" && \
    URL=$(curl -s https://api.github.com/repos/gohugoio/hugo/releases/latest | jq -r ".assets[] | select(.name | test(\"linux-${HUGO_ARCH}.tar.gz\") and test(\"extended\") and (test(\"withdeploy\") | not)) | .browser_download_url") && \
    echo "Downloading: ${URL}" && \
    wget "${URL}" -O - | tar xzv -C /tmp

##### final image

FROM alpine:latest

COPY --from=prep /tmp/hugo /usr/local/bin/hugo

RUN \
    apk --no-cache upgrade && \
    apk --no-cache add rclone git gcompat libstdc++

ENTRYPOINT [ "/usr/local/bin/hugo" ]