Longtea - Implement own container system

The longtea is result of container study. It is a simple container system implements by using the Linux namespace system. Since, longtea is not complete container system, it is not suitable for production use. Just use it for study.

Installation

curl -sSL https://raw.githubusercontent.com/chungjung-d/longtea/develop/install.sh | sudo bash

Command

Pull

pull the image on the docker hub. If not specified the tag, the latest tag is used.

$ sudo longtea pull -i <image name>:<tag> # pull the image with tag
$ sudo longtea pull -i <image name>       # pull the image with latest tag

example

$ sudo longtea pull -i ubuntu:22.04

Create

Create the container. If not specified the tag, the latest tag is used and defualt image tag is latest. The -n option is onptional and if not specified, the container name auto set "< image name > _ < tag >".

$ sudo longtea create -n <container name> -i <image name>:<tag>  # create the container with container name
$ sudo longtea create -i <image name>:<tag>     # create the container with image name  container name auto set <image name>_<tag>

example

$ sudo longtea create -n ubnutu_test -i ubuntu:22.04

$ sudo longtea create -i ubuntu:22.04

Start

Start the created container with container name. If the tag version is not pulled yet, it return error message.

$ sudo longtea start -n <container name>   # start the container with container name

example

$ sudo longtea start -n ubuntu_22.04

Run

Run command is combination of create and start command. If the tag version is not pulled yet, it return error message.

$ sudo longtea run -n <container name> -i <image name>:<tag>  # create and start the container with container name
$ sudo longtea run -i <image name>:<tag>     # create and start the container with image name  container name auto set <image name>_<tag>

Remove

Remove the container or image. Use -i option to remove the image and -c option to remove the container. If want to remove all image use just image name without tag.

$ sudo longtea remove -i <image name>:<tag>   # remove the image with tag
$ sudo longtea remove -i <image name>         # remove all image with image name
$ sudo longtea remove -c <container name>     # remove the container

List

List the container or image. Use -i option to list the image and -c option to list the container or use both -ic option to list all.

$ sudo longtea list -ic  # list all container and image
$ sudo longtea list -i   # list all image
$ sudo longtea list -c   # list all container

TODO

It need to implement the following features. It will be implemented on version 0.2.0.

• Implement the network namespace
• Implement the background run
• Implement the Squlite DB connection to manage the container