Docker is an open platform for building, shipping and running distributed applications. It allows developers to package applications into containers that have everything needed to run, including libraries and other dependencies, and ship them to any Docker-enabled infrastructure. Containers are more portable and provide better isolation than virtual machines, and allow applications to be deployed with minimal overhead or conflict. Docker uses containers, images and a Dockerfile to deploy and run applications reliably across any infrastructure.

3. Platform to help code, test and deploy
applications
Open platform for developers and
sysadmins to build, ship, and run
distributed applications.
Light weight containers
Available on most linux distros

4. Deploy reliably & consistently
Everything will be exactly the same
Distros
Software versions
Library dependencies
If it works locally, it will work everywhere

5. Ship More Software Faster
Minimal overhead/resource usage
Quickly Scale
Run thousands of containers
Easy to run your whole production stack
locally
Simply share your application with others

6. Bare metal: 8 to 24 Hours
Cloud VM: 5 to 10 Minutes
Container: 5 to 15 Seconds

9. Mac OS X installation: Docker
Toolbox
Windows installation: Docker
Toolbox
Linux installation: Native

12. Docker host, the computer running
the Docker Engine.
The daemon managing Docker images
and containers.
using namespaces and cgroups
It runs on the (Linux-based) Host

13. It accepts commands from the user
and communicates back and forth
with a Docker daemon.

14. https://hub.docker.com/
Docker registries hold images. These are
public or private stores from which you
upload or download images. The public
Docker registry is provided with the Docker
Hub.
You can create your own Docker Registry with
Docker Distribution

15. A Docker image is a read-only
template.
Docker images are the build
component of Docker.

16. Docker containers are similar to a
directory. A Docker container holds
everything that is needed for an
application to run.
Each container is created from a
Docker image.

18.  Dockerfile is instructions to build Docker image
How to run commands
Add files or directories
Create environment variables
What process to run when launching container
 Result from building Dockerfile is Docker image

19.  ADD: Copy a file from the host into the container
 CMD: Set default commands to be executed, or passed to the ENTRYPOINT
 ENTRYPOINT: Set the default entrypoint application inside the container
 ENV: Set environment variable (e.g. key = value)
 EXPOSE: Expose a port to outside
 FROM: Set the base image to use
 MAINTAINER: Set the author / owner data of the Dockerfile
 RUN: Run a command and commit the ending result (container) image
 VOLUME: Mount a directory from the host to the container
 WORKDIR: Set the directory for the directives of CMD to be executed
 COPY: copies new files or directories from source to destination

20. FROM ubuntu:14.04
MAINTAINER Jirayut Nimsaeng <w [at] winginfotech.net>
ADD build-files /build-files
RUN apt-get update
RUN apt-get install -y openssh-server vim tmux rsync byobu
RUN mkdir /var/run/sshd
RUN sed -i 's/required pam_loginuid.so/optional
pam_loginuid.so/g' /etc/pam.d/sshd
CMD /start.sh
EXPOSE 22

22. Dockerfile ----- Dev/Build Server
Build ----- Dev/Build Server
Push ------ Docker Registry
Pull ------ Container Server
Run ------ Container Server

23.  Docker Compose: create and manage multi-container
architectures
 Kitematic: Simple application for managing Docker
containers on Mac and Windows
 Docker Swarm: orchestrating tool to provision and
schedule containers
 Docker Machine: provision hosts and install Docker
on them
 Virtual Box: Virtualization software to run Docker
host for Mac and Windows

24.  attach -- Attach to a running container
 build -- Build an image from a Dockerfile
 commit -- Create a new image from a container's changes
 cp -- Copy files/folders between a container and the local filesystem
 create -- Create a new container
 events -- Get real time events from the server
 exec -- Run a command in a running container
 export -- Export a container's filesystem as a tar archive
 help -- Show help for a command
 images -- List images

25.  kill -- Kill a running container
 login -- Register or log in to a Docker registry
 logout -- Log out from a Docker registry
 logs -- Fetch the logs of a container
 network -- Manage Docker networks
 port -- List port mappings or a specific mapping for the CONTAINER
 ps -- List containers
 pull -- Pull an image or a repository from a registry
 push -- Push an image or a repository to a registry
 restart -- Restart a container

26.  rm -- Remove one or more containers
 rmi -- Remove one or more images
 run -- Run a command in a new container
 start -- Start one or more stopped containers
 stop -- Stop a running container
 version -- Show the Docker version information
 volume -- Manage Docker volumes
 search -- Search the Docker Hub for images