docker

intro

a short one

demo

yay

docker

Heard of it?
Used it?

Software

Heard of it?
Used it?
Wrote it?

Environments

development
staging
production

by machine role

Environments

development - server-side
development - client-side
development - tests
quality assurance
operations
etc

by team member role

Environments

OS version, updates
run-time (Java, .NET, nodejs)
databases
other software
all of the above (combinations)
matrix from hell [1]

setup

The matrix from hell

https://blog.docker.com/2013/08/paas-present-and-future/

Environments

Phoenix server [2]
Immutable server [3]

solutions

docker

docker.com
Platform for containerising software
“Enables independence between applications” [4]
VERY NICE
what does it mean, though

again

docker

Linux kernel black magic
Not a new concept
LXD by Canonical [5], etc

containers

docker

standard unit of software
stand-alone
executable
lightweight

containers

docker

virtual machine

https://www.docker.com/what-container

docker

Linux (CentOS, Debian, etc.)
OSX
Windows (also Server)
AWS, Azure, GC
ARM (RaspberryPi) [6]

support

docker

MSSQL (on Linux)
IIS

windows?

docker

https://www.docker.com/get-docker
Community Edition

installing

docker

via package manager
https://docs.docker.com/engine/installation/linux/docker-ce/ubuntu/

installing on Linux

docker

https://www.docker.com/docker-windows
Hyper-V
GUI

installing on Windows

docker

https://www.docker.com/docker-mac
MacOS hypervisor

installing on Mac

docker

run a container
Docker hub (store)
Dockerfile
docker build
manage running containers

doing stuff

docker

pull

$ docker pull alpine:latest

docker

images

$ docker images
REPOSITORY                           TAG                 IMAGE ID            CREATED             SIZE
alpine                               latest              37eec16f1872        13 hours ago        3.97MB

docker

run

$ docker run -it alpine cat /etc/issue

$ docker run -it alpine /bin/sh

docker

$ docker ps

$ docker ps -a

docker

Dockerfile

FROM alpine:latest

CMD cat /etc/issue

docker

build

$ docker build -t myfirstimage .

docker

https://github.com/codrineugeniu/docker-weather

demo

docker

docker-compose

docker

containers are transient

Caveats

docker

https://github.com/dockersamples/example-voting-app

References

https://blog.docker.com/2013/08/paas-present-and-future/
https://martinfowler.com/bliki/PhoenixServer.html
https://martinfowler.com/bliki/ImmutableServer.html
https://www.docker.com/what-docker
https://linuxcontainers.org/lxd/introduction/
https://blog.hypriot.com/getting-started-with-docker-on-your-arm-device/