Docker Containers

Containers are instances of Docker images that can be run using the Docker run command. The basic purpose of Docker is to run containers. Let’s discuss how to work with containers.

Running a Container

Running of containers is managed with the Docker run command. To run a container in an interactive mode, first launch the Docker container.

➜  ~ sudo docker run -it ubuntu /bin/bash
root@28aef3e3d301:/# id
uid=0(root) gid=0(root) groups=0(root)
root@28aef3e3d301:/# uname -a
Linux 28aef3e3d301 5.13.0-30-generic #33~20.04.1-Ubuntu SMP Mon Feb 7 14:25:10 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

Listing of Running Containers

One can list all of the containers on the machine via the docker ps command. This command is used to return the currently running containers.

➜  ~ sudo docker ps
CONTAINER ID   IMAGE     COMMAND       CREATED         STATUS        PORTS     NAMES
6477ee9581e5   ubuntu    "/bin/bash"   2 seconds ago   Up 1 second             angry_panini

Listing of Running All Containers

There is 2 ways to do that

# First one
➜  ~ sudo docker container ls -a
CONTAINER ID   IMAGE                                                 COMMAND                  CREATED              STATUS                     PORTS     NAMES
28aef3e3d301   ubuntu                                                "/bin/bash"              About a minute ago   Up About a minute                    naughty_cray
eb84bcb5fa47   opensecurity/mobile-security-framework-mobsf:latest   "/home/mobsf/Mobile-…"   4 hours ago          Exited (137) 4 hours ago             mobsf

# Second one
➜  ~ sudo docker ps -a
CONTAINER ID   IMAGE                                                 COMMAND                  CREATED          STATUS                     PORTS     NAMES
28aef3e3d301   ubuntu                                                "/bin/bash"              40 minutes ago   Exited (0) 3 minutes ago             naughty_cray
eb84bcb5fa47   opensecurity/mobile-security-framework-mobsf:latest   "/home/mobsf/Mobile-…"   5 hours ago      Exited (137) 5 hours ago             mobsf