ARG PLEX_VER=1.22.2.4180-2f337bbd5
ARG PLEX_SHA=23b53f67e65a4310cb12f3dd6566de5c3224104f
ARG XMLSTAR_VER=1.6.1
ARG BUSYBOX_VER=1.33.0
ARG SU_EXEC_VER=0.4
ARG TINI_VER=0.19.0

FROM spritsail/alpine:3.13 AS builder

ARG PLEX_VER
ARG PLEX_SHA
ARG LIBXML2_VER=v2.9.10
ARG LIBXSLT_VER=v1.1.34
ARG XMLSTAR_VER
ARG BUSYBOX_VER
ARG SU_EXEC_VER
ARG TINI_VER
ARG MAKEFLAGS

ARG PREFIX=/prefix

WORKDIR /plex

ENV CFLAGS="-O2 -pipe -fstack-protector-strong -D_FORTIFY_SOURCE=2 -flto" \
    CXXFLAGS="${CFLAGS}" \
    LDFLAGS="${CFLAGS} -Wl,-O1,--sort-common,--as-needed,-z,relro,-z,now"

RUN apk add --no-cache \
        autoconf \
        automake \
        binutils \
        cmake \
        curl \
        dpkg \
        file \
        gcc \
        git \
        libtool \
        linux-headers \
        make \
        musl-dev \
        pkgconfig \
        xxd

# Fetch Plex and required libraries
RUN curl -fsSL -o plexmediaserver.deb https://artifacts.plex.tv/testing/pms/${PLEX_VER}/debian/plexmediaserver_${PLEX_VER}_amd64.deb \
 && echo "$PLEX_SHA  plexmediaserver.deb" | sha1sum -c - \
 && dpkg-deb -x plexmediaserver.deb . \
    \
 && rm -r \
        etc/ usr/share/ \
        plexmediaserver.deb \
    \
 && cd usr/lib/plexmediaserver \
 && rm \
        lib/libxml2.so* \
        lib/libxslt.so* \
        lib/libexslt.so* \
        lib/plexmediaserver.* \
        Resources/start.sh \
    \
    # Place shared libraries in usr/lib so they can be actually shared
 && mv lib/*.so* lib/dri ../ \
 && rmdir lib \
 && ln -sv ../ lib

WORKDIR /tmp/busybox

# Download and build busybox
RUN curl -fsSL https://busybox.net/downloads/busybox-${BUSYBOX_VER}.tar.bz2 \
        | tar xj --strip-components=1 \
 && make defconfig \
 && make \
 && install -Dm755 busybox "${PREFIX}/bin/busybox" \
    # "Install" busybox, creating symlinks to all binaries it provides
 && mkdir -p "${PREFIX}/bin" "${PREFIX}/sbin" "${PREFIX}/usr/bin" "${PREFIX}/usr/sbin" \
 && ./busybox --list-full | xargs -i ln -Tsv /bin/busybox "${PREFIX}/{}"

WORKDIR /tmp/su-exec

# Download and build su-exec
RUN curl -fL https://github.com/frebib/su-exec/archive/v${SU_EXEC_VER}.tar.gz \
        | tar xz --strip-components=1 \
 && make \
 && install -Dm755 su-exec "${PREFIX}/sbin/su-exec"

WORKDIR /tmp/tini

# Download and build tini
RUN curl -fL https://github.com/krallin/tini/archive/v${TINI_VER}.tar.gz \
        | tar xz --strip-components=1 \
 && cmake . \
 && make tini \
 && install -Dm755 tini "${PREFIX}/sbin/tini"

# Download and build libxml2
WORKDIR /tmp/libxml2
RUN git clone https://gitlab.gnome.org/GNOME/libxml2.git --branch $LIBXML2_VER --depth 1 . \
 && ./autogen.sh \
        --prefix=/usr \
        --without-catalog \
        --without-docbook \
        --without-ftp \
        --without-http \
        --without-iconv \
        --without-iso8859x \
        --without-legacy \
        --without-modules \
        --without-python \
 && make DESTDIR=$PREFIX install

# Download and build libxslt
WORKDIR /tmp/libxslt
RUN git clone https://gitlab.gnome.org/GNOME/libxslt.git --branch $LIBXSLT_VER --depth 1 . \
 && ./autogen.sh \
        --prefix=/usr \
        --with-libxml-src="../libxml2" \
        --without-crypto \
        --without-plugins \
        --without-python \
 && make DESTDIR=$PREFIX install

# Download and build xmlstarlet
ADD xmlstarlet-*.patch /tmp
WORKDIR /tmp/xmlstarlet
RUN git clone git://git.code.sf.net/p/xmlstar/code --branch $XMLSTAR_VER --depth 1 . \
 && git apply /tmp/xmlstarlet*.patch \
 && autoreconf -sif \
 && ./configure \
        --prefix=/usr \
        --disable-build-docs \
        --with-libxml-prefix=$PREFIX/usr \
        --with-libxslt-prefix=$PREFIX/usr \
 && make DESTDIR=$PREFIX install

WORKDIR $PREFIX

RUN mkdir -p \
        /output/usr/lib \
        /output/usr/bin \
        /output/usr/sbin \
        /output/etc/ssl/certs \
 && install -m 1777 -o root -g root -d /output/tmp \
 && ln -s /usr/lib /usr/bin /usr/sbin /output/ \
    # Link Plex ca-certificates as system store so curl and others can use them too
 && ln -sv /usr/lib/plexmediaserver/Resources/cacert.pem /output/etc/ssl/certs/ca-certificates.crt \
    # Move binaries and libraries into their final locations
 && mv usr/lib/*.so* \
       /plex/usr/lib/* \
       /output/usr/lib \
 && mv usr/bin/xml /output/usr/bin/xmlstarlet \
 && mv bin/* usr/bin/* /output/usr/bin \
 && mv sbin/* usr/sbin/* /output/usr/sbin \
    # Strip all unneeded symbols for optimum size
 && find /output -type f -exec sh -c 'file "{}" | grep -q ELF && strip --strip-debug "{}"' \;

ADD --chmod=755 \
        entrypoint \
        claim-server.sh \
        gen-config.sh \
        plex-util.sh \
        /output/usr/bin/

#=========================

FROM scratch

ARG PLEX_VER
ARG XMLSTAR_VER
ARG BUSYBOX_VER
ARG SU_EXEC_VER
ARG TINI_VER

LABEL maintainer="Spritsail <plex@spritsail.io>" \
      org.label-schema.vendor="Spritsail" \
      org.label-schema.name="Plex Media Server" \
      org.label-schema.url="https://www.plex.tv/downloads/" \
      org.label-schema.description="Tiny Docker image for Plex Media Server, built on busybox" \
      org.label-schema.version=${PLEX_VER} \
      io.spritsail.version.plex=${PLEX_VER} \
      io.spritsail.version.busybox=${BUSYBOX_VER} \
      io.spritsail.version.xmlstarlet=${XMLSTAR_VER}

WORKDIR /usr/lib/plexmediaserver

COPY --from=builder /output/ /

ENV SUID=900 SGID=900 \
    PLEX_MEDIA_SERVER_MAX_PLUGIN_PROCS="6" \
    PLEX_MEDIA_SERVER_MAX_STACK_SIZE="3000" \
    PLEX_MEDIA_SERVER_TMPDIR="/tmp" \
    PLEX_MEDIA_SERVER_HOME="/usr/lib/plexmediaserver" \
    PLEX_MEDIA_SERVER_APPLICATION_SUPPORT_DIR="/var/lib/plexmediaserver"

HEALTHCHECK --interval=10s --timeout=5s \
    CMD [ "wget", "-O", "/dev/null", "-T", "10", "-q", "localhost:32400/identity" ]

EXPOSE 32400

VOLUME ["/config", "/transcode"]

RUN mkdir -p "$PLEX_MEDIA_SERVER_APPLICATION_SUPPORT_DIR" \
 && ln -sfv /config "$PLEX_MEDIA_SERVER_APPLICATION_SUPPORT_DIR/Plex Media Server"

ENTRYPOINT ["/sbin/tini", "--"]
CMD ["/usr/bin/entrypoint"]