Create Linux OS Rootfs for Build Docker Images

Create Linux OS ROOTFS

1. Create an output folder

   # mkdir -p /output/
   

2. Create rootfs.tar

   # cd /
   # tar cf /output/rootfs.tar --exclude=/proc --exclude=/dev --exclude=/boot --exclude=/run --exclude=/sys --exclude=/output /
   

3. Compress tar file with xz

   # xz -v -T 0 /output/rootfs.tar
   

Build Docker Image

Build docker image from scratch with rootfs.tar.xz

FROM scratch
ADD ./rootfs.tar.xz /