FROM golang:1.20.4-alpine3.17 as go
RUN set -ex; \
    apk add --no-cache \
        vips-dev \
        vips-magick \
        vips-heif \
        vips-jxl \
        vips-poppler \
        build-base; \
    go install github.com/h2non/imaginary@b632dae8cc321452c3f85bcae79c580b1ae1ed84;

FROM alpine:3.17.3
RUN set -ex; \
    apk add --no-cache \
        tzdata \
        ca-certificates \
        netcat-openbsd \
        vips \
        vips-magick \
        vips-heif \
        vips-jxl \
        vips-poppler

COPY --from=go /go/bin/imaginary /usr/local/bin/imaginary

ENV PORT 9000

USER nobody

# https://github.com/h2non/imaginary#memory-issues
ENV MALLOC_ARENA_MAX=2
ENTRYPOINT ["imaginary", "-return-size", "-max-allowed-resolution", "222.2"]

HEALTHCHECK CMD nc -z localhost $PORT || exit 1
LABEL com.centurylinklabs.watchtower.monitor-only="true"