github.com/demonoid81/moby@v0.0.0-20200517203328-62dd8e17c460/contrib/mkimage/busybox-static (about) 1 #!/usr/bin/env bash 2 set -e 3 4 rootfsDir="$1" 5 shift 6 7 busybox="$(which busybox 2> /dev/null || true)" 8 if [ -z "$busybox" ]; then 9 echo >&2 'error: busybox: not found' 10 echo >&2 ' install it with your distribution "busybox-static" package' 11 exit 1 12 fi 13 if ! ldd "$busybox" 2>&1 | grep -q 'not a dynamic executable'; then 14 echo >&2 "error: '$busybox' appears to be a dynamic executable" 15 echo >&2 ' you should install your distribution "busybox-static" package instead' 16 exit 1 17 fi 18 19 mkdir -p "$rootfsDir/bin" 20 rm -f "$rootfsDir/bin/busybox" # just in case 21 cp "$busybox" "$rootfsDir/bin/busybox" 22 23 ( 24 cd "$rootfsDir" 25 26 IFS=$'\n' 27 modules=($(bin/busybox --list-modules)) 28 unset IFS 29 30 for module in "${modules[@]}"; do 31 mkdir -p "$(dirname "$module")" 32 ln -sf /bin/busybox "$module" 33 done 34 )