01. Basic Usuage - Container

Load image remotely

docker pull ubuntu

Check all the containers

docker ps -a

Container Operating

Start Container

docker run -it ubuntu /bin/bash

parameters

• -i: interactive mode
• -t: using the terminal
• ubuntu: using ubuntu image
• /bin/bash: command for the image, here we use bash for the terminal shell

Exit from the terminal

exit

Rename a container

docker rename <old_name_or_id> <new_name>

Start a stopped container

docker start <container_id/name>

Run container in background

docker run -itd --name ubuntu-test ubuntu /bin/bash

Stop a container

docker stop <container_id/name>

Restart a container

docker restart <container_id/name>

Enter a running container

docker attach <container_id/name>: This approach will lead to stopping after exit the container.

docker exec -it <container_id/name> /bin/bash: This approach will not cause stopping of the container

Export container

docker export 1e560fca3906 > ubuntu.tar

Import container snapshot

cat ubuntu.tart | docker import - test/ubuntu:v1

Delete container

docker rm -f <container_id/name>

Port Mapping

Same mapping

docker run -d -P training/webapp python app.py
docker run -d -p 8080:8080 training/webapp python app.py

Parameters

• -d: run the container in background
• -P: map random port of container to the host
• -p: map a specified ports between container and host

Specified Mapping Port

docker run -d -p 5000:5000 training/webapp python app.py

View all the mapping port

docker port <container_id/container_name>

Container Monitoring

Standard I/O

docker logs -f <container_id/container_name>

Check Processes

docker top <container_id/container_name>

Volume(Load Local Path)

docker run -p 9999:9999 -it -v {host path}:{container path} ubuntu

docker run -p 9999:9999 -it -v D:\workspace\12.docker:/data ubuntu

Add privilege

Add read only limitation
docker run -p 9999:9999 -it --previleged -v D:\workspace\12.docker:/data:ro ubuntu

Read and Write
docker run --previleged -it -v D:\workspace\12.docker:/data:rw ubuntu

Info

• --previleged=true
  Docker privileged mode grants a Docker container root capabilities to all devices on the host system.

Inherit Volume

docker run -it --previleged=true --volumes-from {parent_container} --name {new_container} ubuntu

Share Folder With Host

Common Commands

Stop all containers docker stop $(docker ps -q)
Delete all containersdocker rm $(docker ps -aq)
Delete all imagesdocker rmi -f $(docker images -q)

Reference

Tutoriaspoint