docker.md

Resources

https://www.tutorialworks.com/why-containers-stop/#:~:text=You're%20running%20a%20shell,t%20attached%20an%20interactive%20terminal.

1.) How to Run a docker container

docker run -ti ubuntu:latest bash

-ti means terminal interactive

2.) Show docker containers

docker ps -l // last running docker container docker ps -a // all containers

3.) If you want to run a command inside a running docker container

docker exec -it bash

4.) To make an image from a container

docker commit This outputs a SHA

We can use the image to run a new container

docker run -ti bash

5.) Delelte Container via

docker rm

Delte the container once it runs the bash script docker run --rm -ti ubuntu:latest bash -c "sleep 5 ; echo done"

6.) running in detached mode

docker run -d ubuntu:latest ex. running the node web-server in detached mode.

7.) Stopping a container V/S removing a container

docker kill <container id / name> : stops the container docker rm <container id / name > : removes the container

Q.) Why all containers are showing exited : ╭─krchopra@krchopra-Mac ~/Workbook/miscellaneous-daily ‹master› ╰─$ docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 9ee2b4d6eb6a fedora:latest "/bin/bash" 14 seconds ago Exited (0) 13 seconds ago exciting_boyd 646371d5df56 ubuntu:latest "bash" 55 seconds ago Exited (0) 54 seconds ago agitated_lehmann

Till the time I am in the container: the container was running : as soon as i exited the terminal, the container terminated too.

8.) To troubleshoot use

docker logs <contaner-id / name>

9.) docker inspect

10.) docker build -t