Detailed explanation of docker command to backup linux system

tar backup system

sudo tar cvpzf backup.tgz --exclude=/proc --exclude=/mnt --exclude=/sys --exclude=/backup.tgz /

For more Linux backup methods, refer to https://www.jb51.net/article/151167.htm

Writing dockerfile

Create a new directory Dockerfile and edit the Dockerfile script in the Dockerfile directory to the following content:

FROM scratch
COPY rootfs /
RUN chmod u+s /usr/bin/sudo
RUN chmod u+s /usr/bin/passwd
RUN chmod u+s /bin/su
RUN chmod u+s /bin/ping
RUN chmod u+s /bin/mount
RUN chmod u+s /bin/umount
USER root
WORKDIR /home/root

Change username and password as needed

Import the backed up system files as a docker image

1. Create a new directory backup in the Dockerfile directory

2. Unzip the backed up tar file to the backup directory: tar xvpfz backup.tgz

3.sudo docker build -t centos/centos:7.0 .

Summarize

The above is a detailed explanation of the docker command to back up the Linux system. I hope it will be helpful to you. If you have any questions, please leave me a message and I will reply to you in time. I would also like to thank everyone for their support of the 123WORDPRESS.COM website!