github.com/slava-ustovytski/docker@v1.8.2-rc1/contrib/mkimage-crux.sh (about)

     1  #!/usr/bin/env bash
     2  # Generate a minimal filesystem for CRUX/Linux and load it into the local
     3  # docker as "cruxlinux"
     4  # requires root and the crux iso (http://crux.nu)
     5  
     6  set -e
     7  
     8  die () {
     9      echo >&2 "$@"
    10      exit 1
    11  }
    12  
    13  [ "$#" -eq 1 ] || die "1 argument(s) required, $# provided. Usage: ./mkimage-crux.sh /path/to/iso"
    14  
    15  ISO=${1}
    16  
    17  ROOTFS=$(mktemp -d ${TMPDIR:-/var/tmp}/rootfs-crux-XXXXXXXXXX)
    18  CRUX=$(mktemp -d ${TMPDIR:-/var/tmp}/crux-XXXXXXXXXX)
    19  TMP=$(mktemp -d ${TMPDIR:-/var/tmp}/XXXXXXXXXX)
    20  
    21  VERSION=$(basename --suffix=.iso $ISO | sed 's/[^0-9.]*\([0-9.]*\).*/\1/')
    22  
    23  # Mount the ISO
    24  mount -o ro,loop $ISO $CRUX
    25  
    26  # Extract pkgutils
    27  tar -C $TMP -xf $CRUX/tools/pkgutils#*.pkg.tar.gz
    28  
    29  # Put pkgadd in the $PATH
    30  export PATH="$TMP/usr/bin:$PATH"
    31  
    32  # Install core packages
    33  mkdir -p $ROOTFS/var/lib/pkg
    34  touch $ROOTFS/var/lib/pkg/db
    35  for pkg in $CRUX/crux/core/*; do
    36      pkgadd -r $ROOTFS $pkg
    37  done
    38  
    39  # Remove agetty and inittab config
    40  if (grep agetty ${ROOTFS}/etc/inittab 2>&1 > /dev/null); then
    41      echo "Removing agetty from /etc/inittab ..."
    42      chroot ${ROOTFS} sed -i -e "/agetty/d" /etc/inittab
    43      chroot ${ROOTFS} sed -i -e "/shutdown/d" /etc/inittab
    44      chroot ${ROOTFS} sed -i -e "/^$/N;/^\n$/d" /etc/inittab
    45  fi
    46  
    47  # Remove kernel source
    48  rm -rf $ROOTFS/usr/src/*
    49  
    50  # udev doesn't work in containers, rebuild /dev
    51  DEV=$ROOTFS/dev
    52  rm -rf $DEV
    53  mkdir -p $DEV
    54  mknod -m 666 $DEV/null c 1 3
    55  mknod -m 666 $DEV/zero c 1 5
    56  mknod -m 666 $DEV/random c 1 8
    57  mknod -m 666 $DEV/urandom c 1 9
    58  mkdir -m 755 $DEV/pts
    59  mkdir -m 1777 $DEV/shm
    60  mknod -m 666 $DEV/tty c 5 0
    61  mknod -m 600 $DEV/console c 5 1
    62  mknod -m 666 $DEV/tty0 c 4 0
    63  mknod -m 666 $DEV/full c 1 7
    64  mknod -m 600 $DEV/initctl p
    65  mknod -m 666 $DEV/ptmx c 5 2
    66  
    67  IMAGE_ID=$(tar --numeric-owner -C $ROOTFS -c . | docker import - crux:$VERSION)
    68  docker tag $IMAGE_ID crux:latest
    69  docker run -i -t crux echo Success.
    70  
    71  # Cleanup
    72  umount $CRUX
    73  rm -rf $ROOTFS
    74  rm -rf $CRUX
    75  rm -rf $TMP