docker-ce.SlackBuild

#!/bin/sh

# Copyright 2018 Zak B. Elep, Makati, Metro Manila, Philippines
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ''AS IS'' AND ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.


PKGNAM=docker-ce
RELEASE=${RELEASE:-20.10.12}
ARCH="x86_64"
BUILD=${BUILD:-1zakame}


if [ ! "$(id -u)" = 0 ]; then
  cat << EOF

This script must be run as root.

EOF
  exit 1
fi

if ! /bin/ls "docker-${RELEASE}.tgz" 1> /dev/null 2> /dev/null ; then
  cat << EOF

This is a script to repackage a statically-linked Docker CE release
for Slackware.  Run this script in the same directory as this
binary package:

  docker-${RELEASE}.tgz
  
This will create a Slackware .txz package.  Install it with installpkg
or use upgradepkg to upgrade from a previous version.

EOF
  exit 1
fi

DOCKER_GID=${DOCKER_GID:-281}

if ! /bin/grep ^docker: /etc/group 1> /dev/null 2> /dev/null ; then
    cat << EOF

You must have a docker group to run this script:

  # groupadd -r -g $DOCKER_GID docker

EOF
  exit 1
fi

CWD=$(pwd)
TMP=${TMP:-/tmp}
PKG=$TMP/package-$PKGNAM
OUTPUT=${OUTPUT:-/tmp}

rm -rf "$PKG"
mkdir -p "$TMP" "$PKG" "$OUTPUT"
cd "$PKG" || exit 1
tar xf "$CWD/docker-${RELEASE}.tgz" || exit 1
chown -R root:root .
chmod -R u+w,go+r-w,a-s .

# Make sure top-level perms are correct:
chmod 0755 .

# Move the binaries into place:
install -d -m 755 "$PKG/usr/bin/"
install -p -m 755 "$PKG/docker/docker" "$PKG/usr/bin/"
install -p -m 755 "$PKG/docker/containerd" "$PKG/usr/bin/"
install -p -m 755 "$PKG/docker/ctr" "$PKG/usr/bin/"
install -p -m 755 "$PKG/docker/containerd-shim" "$PKG/usr/bin/"
install -p -m 755 "$PKG/docker/containerd-shim-runc-v2" "$PKG/usr/bin/"
install -p -m 755 "$PKG/docker/docker-init" "$PKG/usr/bin/"
install -p -m 755 "$PKG/docker/docker-proxy" "$PKG/usr/bin/"
install -p -m 755 "$PKG/docker/runc" "$PKG/usr/bin/"
install -p -m 755 "$PKG/docker/dockerd" "$PKG/usr/bin/"
rm -fr "$PKG/docker/"

# Install configuration:
install -D -m644 "$CWD/config/docker.default" "$PKG/etc/default/docker.new"
install -D -m644 "$CWD/config/docker.logrotate" "$PKG/etc/logrotate.d/docker.new"
install -D -m755 "$CWD/config/rc.docker" "$PKG/etc/rc.d/rc.docker.new"

# Track containerd managed /opt
install -d -m 711 "$PKG/opt/containerd/"
install -d -m 711 "$PKG/opt/containerd/bin/"
install -d -m 711 "$PKG/opt/containerd/lib/"

mkdir -p "$PKG/install"
cat "$CWD/slack-desc" > "$PKG/install/slack-desc"
cat <<EOINS >> "$PKG/install/doinst.sh"
# Handle the incoming configuration files:
config() {
  for infile in \$1; do
    NEW="\$infile"
    OLD="\`dirname \$NEW\`/\`basename \$NEW .new\`"
    # If there's no config file by that name, mv it over:
    if [ ! -r \$OLD ]; then
      mv \$NEW \$OLD
    elif [ "\`cat \$OLD | md5sum\`" = "\`cat \$NEW | md5sum\`" ]; then
      # toss the redundant copy
      rm \$NEW
    fi
    # Otherwise, we leave the .new copy for the admin to consider...
  done
}

# Keep same perms on rc.docker.new:
if [ -e etc/rc.d/rc.docker ]; then
  cp -a etc/rc.d/rc.docker etc/rc.d/rc.docker.new.incoming
  cat etc/rc.d/rc.docker.new > etc/rc.d/rc.docker.new.incoming
  mv etc/rc.d/rc.docker.new.incoming etc/rc.d/rc.docker.new
fi

config etc/rc.d/rc.docker.new
config etc/default/docker.new
config etc/logrotate.d/docker.new
EOINS

cd "$PKG" || exit 1
/sbin/makepkg -l y -c n "$OUTPUT/$PKGNAM-$RELEASE-$ARCH-$BUILD.txz"