Commands

Clone a docker container

• docker pull <image>:latest. The tag latest is not required. Clone the container appropriate for your use case, for eg., use centos for the latest version of CentOS. CentOS and most other linux operating systems are available as official repositories from the Docker Hub.

• To use non-official docker images, you need to add the organisation before the docker image, for example to pull the latest version of tensorflow: docker pull tensorflow/tensorflow:latest

Using a docker image

• The docker image can be used directly from the Docker Hub

• To launch the centos docker container, run docker run -ti tensorflow/tensorflow:latest /bin/bash

Running a container with a local volume mounted

• docker run -ti -v /home/<user>/<mounted-folder>/:/<path-in-container> cbgeo/cb-geo:latest

Connecting to a running container

• docker exec -ti <containerid> /bin/bash

Start / stop a container

• docker start <containerid>

• docker stop <containerid>

Delete a container

• docker rm <containerid>, stop the container before deleting it.

• To delete all docker containers docker rm $(docker ps -a -q)

Exposing ports

• To connect to a particular port (for e.g., 3000) in docker container to port 3000 in localhost:

  docker run -ti -p 3000:3000 tensorflow/tensorflow

To login as root

• Launching docker as root user: docker exec -u 0 -ti <containerid> /bin/bash

Creating an image from a docker file

• To build an image from docker file run as root docker build -t "tensorflow/tensorflow" /path/to/Dockerfile

• docker history will show you the effect of each command has on the overall size of the file.

Docker cheat sheet