Enter docker container

docker exec -it 4acaacf968b0 bash

###Exit

Ctrl + P + Q

Copy files From/To image

docker cp /root/wordpress/enfold/ wordpress_wordpress_1:/var/www/html/wp-content/themes

docker cp /root/wordpress/sitepress-multilingual-cms/ wordpress_wordpress_1:/var/www/html/wp-content/plugins

Remove docker images

docker rm

To view stopped and running containers

docker ps -a

Docker Compose

docker-compose ps

##Top process running on the container

docker top 4acaacf968b0

Limite Container Resorse Usage

docker run –cup-shares=256 docker run memory=1g

Export Docker

Image location /var/lib/docker/aufs/layers

Create a copy called “fridge”

docker commit 4acaacf968b0 fridge

Command used to create this image

docker history fridge

docker save -o /root/temp/fridge.tar fridge

docker load -i /root/temp/fridge.tar

Create Image

Using Docker Commit

1 Create docker container

$ sudo docker run -i -t ubuntu /bin/bash root@4aab3ce3cb76:/#

2 Install Apache

root@4aab3ce3cb76:/# apt-get -yqq update

root@4aab3ce3cb76:/# apt-get -y install apache2

3 Exit from container

root@4aab3ce3cb76:/# exit

4 Commit change

$ sudo docker commit 4aab3ce3cb76 jamtur01/apache2

5 Check new image

$ sudo docker images jamtur01/apache2

You can also add commit msg like this:

$ sudo docker commit -m=”A new custom image” –author=”James Turnbull” 4aab3ce3cb76 jamtur01/apache2:webserver

You can check the image detail using:

$ sudo docker inspect jamtur01/apache2:webserver

6 Run docker from an image

$ sudo docker run -t -i jamtur01/apache2:webserver /bin/bash

Run apache

docker run -d -p 8080:80 shic/apache2 /usr/sbin/apache2ctl -D FOREGROUND

Using Dockerfile

1 Create dockerfile

$ mkdir static_web

$ cd static_web

$ touch Dockerfile

Note: this folder is the Build Environment

Dockerfile:

# Version: 0.0.1
FROM ubuntu:14.04
MAINTAINER James Turnbull "james@example.com"
RUN apt-get update
RUN apt-get install -y nginx
RUN echo 'Hi, I am in your container' \
>/usr/share/nginx/html/index.html
EXPOSE 80

FROM base iamge

EXPOSE port number

2 Run Dockerfile

$ cd static_web

add “.” to search dockerfile from current folder

$ sudo docker build -t=”jamtur01/static_web” .

or from git

$ sudo docker build -t=”jamtur01/static_web:v1” git@github.com:jamtur01/docker-static_web

You can also set a tag for image (default tag is “latest”):

$ sudo docker build -t=”jamtur01/static_web:v1” .