Do not create default devices

They are created anyway at runtime, and this set is not very complete.

Signed-off-by: Justin Cormack <justin.cormack@docker.com>

alpine/mkinitrd.sh

@@ -12,65 +12,6 @@ done
 mkdir -m 555 /tmp/dev /tmp/proc /tmp/sys /tmp/mnt
 mkdir -m 1777 /tmp/tmp
 
-cd /tmp/dev
-
-# start from clean slate
-rm -rf *
-
-mknod -m 666 null c 1 3
-mknod -m 666 full c 1 7
-mknod -m 666 ptmx c 5 2
-mknod -m 644 random c 1 8
-mknod -m 644 urandom c 1 9
-mknod -m 666 zero c 1 5
-mknod -m 666 tty c 5 0
-mknod -m 600 console c 5 1
-
-mknod -m 600 tty0 c 4 11
-mknod -m 600 tty1 c 4 12
-mknod -m 600 ttyS0 c 4 64
-mknod -m 600 hvc0 c 229 2
-mknod -m 600 fuse c 10 229
-
-# we are using sata emulation at present
-mknod -m 600 sda b 8 0
-mknod -m 600 sda1 b 8 1
-mknod -m 600 sda2 b 8 2
-mknod -m 600 sda3 b 8 3
-mknod -m 600 sda4 b 8 4
-mknod -m 600 sda5 b 8 5
-mknod -m 600 sda6 b 8 6
-mknod -m 600 sdb b 8 16
-mknod -m 600 sdb1 b 8 17
-mknod -m 600 sdb2 b 8 18
-mknod -m 600 sdb3 b 8 19
-mknod -m 600 sdb4 b 8 20
-mknod -m 600 sdb5 b 8 21
-mknod -m 600 sdb6 b 8 22
-mknod -m 600 xvdf b 8 23
-mknod -m 600 xvdf1 b 8 24
-
-# mount points in /dev
-mkdir pts mqueue shm
-
-# symlinks
-ln -s /proc/kcore core
-ln -s /proc/self/fd fd
-ln -s /proc/self/fd/0 stdin
-ln -s /proc/self/fd/1 stdout
-ln -s /proc/self/fd/2 stderr
-
-# loop devs
-mknod -m 600 loop-control c 10 237
-mknod -m 600 loop0 c 7 0
-mknod -m 600 loop1 c 7 1
-mknod -m 600 loop2 c 7 2
-mknod -m 600 loop3 c 7 3
-mknod -m 600 loop4 c 7 4
-mknod -m 600 loop5 c 7 5
-mknod -m 600 loop6 c 7 6
-mknod -m 600 loop7 c 7 7
-
 # these three files are bind mounted in by docker so they are not what we want
 
 cat << EOF > /tmp/etc/hosts