Notes on Docker

In a Docker installation on Linux, your machine is both the localhost and the Docker host. In networking, localhost means your computer. The Docker host is the machine on which the containers run.

Container runs the selected OS image.


Quick Start:

1. Download and Install Docker toolbox
2. Make sure Virtual box is installed, it is included in Docker Toolbox
3. For troubleshooting: http://stackoverflow.com/questions/33725779/failed-to-open-create-the-internal-network-vagrant-on-windows10
4. Follow below steps to Create a new Docker VM

set PATH=%PATH%;"C:\Program Files\Git\bin"


docker-machine create --driver virtualbox my-default

Setting Proxy on Windows

Method-1

In Docker Toolbox install folder identify start.sh file and include following lines

#export HTTP_PROXY=http://example.com:80

#export HTTPS_PROXY=https://example.com:80

Close and open Docker Quickstart Terminal.

Method-2

1. Connect to Docker machine
2. Connect 
• docker-machine ssh default
3. sudo vi /var/lib/boot2docker/profile
• HTTP_PROXY=http://example.com:80
• HTTPS_PROXY=https://example.com:80
4. Restart the docker-machine

Starting Kitematic using proxy

for /f %%i in ('docker-machine.exe ip default') do set DOCKER_HOST=%%i

SET NO_PROXY=%DOCKER_HOST%

set DOCKER_HOST=tcp://%DOCKER_HOST%:2376

cd Kitematic

Kitematic.exe

Saving and Loading images to and from file system

Saving sample:

docker export - saves a container's running or paused instance to a file

docker save - saves a non-running container image to a file

docker save -o <save image tar file> <image name>

Loading sample:

docker load -i <path to image tar file>

Docker Commit (Save Changes Locally):
sudo docker commit container_id image_name : commit changes made to a local docker container to save any changes made locally.