# Global build argument
ARG THTTPD_VER=2.29
ARG DI_VER=1.2.5

FROM ubuntu:latest AS builder


# =====BUILD BINARIES=====
WORKDIR /usr/src
ARG THTTPD_VER
ARG DI_VER

# Install dependencies & build thttpd
RUN apt update && \
    apt install -y --no-install-recommends \
        curl \
        ca-certificates \
        hugo \
        musl-dev \
        musl-tools \
        build-essential && \
    curl -sSL "https://www.acme.com/software/thttpd/thttpd-$THTTPD_VER.tar.gz" | \
        tar xzf - && \
    cd "thttpd-$THTTPD_VER" && \
    CC="musl-gcc -static" ./configure && \
    make -j$(nproc)

# Build dumb-init
RUN curl -sSL "https://github.com/Yelp/dumb-init/archive/refs/tags/v$DI_VER.tar.gz" | \
    tar xzf - && \
    cd "dumb-init-$DI_VER" && \
    CC="musl-gcc -static" make build


# =====BUILD BLOG=====
WORKDIR /usr/src/app

# Copy site files for building
COPY . ./

# Generate the site
RUN hugo --minify


# ====CREATE RELEASE IMAGE====
FROM scratch
ARG THTTPD_VER
ARG DI_VER

# Copy over binary & static files
COPY --from=builder /usr/src/thttpd-$THTTPD_VER/thttpd /bin/thttpd
COPY --from=builder /usr/src/dumb-init-$DI_VER/dumb-init /bin/dumb-init
COPY --from=builder /usr/src/app/public /static
COPY thttpd.conf /etc/thttpd.conf

# A static file server doesn't need root
USER 82:82

ENTRYPOINT [ "/bin/dumb-init", "--" ]
CMD [  "/bin/thttpd", "-D", "-C", "/etc/thttpd.conf" ]