Dockerfile

# base
FROM aclemons/slackware:latest

# stop interactive prompts
ENV TERM=xterm \
    DIALOG=off \
    PAGER=cat \
    STDOUT=on

# update and install packages
RUN CONF_FILE="/etc/slackpkg/slackpkg.conf" && \
    sed -i "s/^DIALOG=.*/DIALOG=off/" "$CONF_FILE" && \
    sed -i "s/^BATCH=.*/BATCH=on/" "$CONF_FILE" && \
    sed -i "s/^DEFAULT_ANSWER=.*/DEFAULT_ANSWER=y/" "$CONF_FILE" && \
    slackpkg update <<< y && \
    slackpkg update gpg <<< y && \
    slackpkg install ca-certificates && \
    update-ca-certificates

# install required packages for xmlstarlet and development tools
RUN slackpkg install alsa-lib \
    at-spi2-atk \
    atk \
    autoconf \
    automake \
    binutils \
    bison \
    boost \
    brotli \
    bzip2 \
    cairo \
    clang \
    cmake \
    coreutils \
    cppcheck \
    curl \
    cyrus-sasl \
    dbus \
    doxygen \
    elfutils \
    eudev \
    expat \
    ffmpeg \
    fileutils \
    findutils \
    flac \
    flex \
    fontconfig \
    freetype \
    gawk \
    gc \
    gcc \
    gcc-g++ \
    gdb \
    gdk-pixbuf \
    gettext \
    git \
    glib2 \
    glibc \
    gnutls \
    graphicsmagick \
    grep \
    gtk+3 \
    guile \
    gzip \
    harfbuzz \
    icu4c \
    imagemagick \
    json-c \
    kernel-headers \
    libX11 \
    libX11-devel \
    libXScrnSaver \
    libXau \
    libXau-devel \
    libXcomposite \
    libXcursor \
    libXdamage \
    libXdmcp \
    libXdmcp-devel \
    libXext \
    libXext-devel \
    libXfixes \
    libXi \
    libXinerama \
    libXrandr \
    libXrender \
    libXres \
    libXtst \
    libXv \
    libXvMC \
    libXxf86vm \
    libarchive \
    libcap \
    libcurl \
    libdrm \
    libevent \
    libffi \
    libjpeg-turbo \
    libogg \
    libpng \
    libtheora \
    libtiff \
    libtool \
    libunistring \
    libuv \
    libvorbis \
    libxcb \
    libxcb-devel \
    libxkbcommon \
    libxml2 \
    libxml2-devel \
    libxslt \
    libxslt-devel \
    lz4 \
    lzip \
    lzma \
    lzop \
    m4 \
    make \
    mariadb-client \
    mesa \
    mesa-devel \
    meson \
    nano \
    ncurses \
    ncurses-devel \
    nettle \
    nghttp2 \
    ninja \
    nmap \
    opus \
    p11-kit \
    pango \
    pcre \
    pcre2 \
    perl \
    pkg-config \
    postgresql-libs \
    python-pip \
    python3 \
    qt5 \
    readline \
    rsync \
    samba \
    sed \
    speex \
    sqlite \
    tcl \
    tk \
    unixODBC \
    util-linux \
    vulkan-sdk \
    wget \
    x264 \
    x265 \
    xxHash \
    xz \
    yaml-cpp \
    zlib \
    zlib-devel \
    zstd \
    libgcrypt \
    libgpg-error

# github, curl, and wget give ssl errors unless openssl is reinstalled. For some reason, simply installing doesn't work.
RUN slackpkg install openssl
RUN slackpkg reinstall openssl

# cleanup
RUN slackpkg clean-system || true && \
    rm -rf /var/cache/packages/* /var/lib/slackpkg/* /usr/share/man/* /usr/share/info/* /usr/share/doc/* && \
    rm -rf /tmp/* /var/tmp/*

# copy the build script 
COPY build.sh /usr/local/bin/build.sh

# make the script executable
RUN chmod +x /usr/local/bin/build.sh

# set entrypoint 
ENTRYPOINT ["/usr/local/bin/build.sh"]