Docker Workshop Ahmad Rafiee

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