Azure Meetup Stuttgart - Multi-arch Docker images

Heutiger Sponsor:
Location, Sprecher, Verpflegung
Heutiges Thema:
Stefan Scherer
Bauen und Verteilen hybrider 
Docker Images für 
Linux und Windows
Azure Usergroup 
Stuttgart
AzureStuttgart.de | twitter.com/AzureStuttgart Foto mit freundlicher Genehmigung von lightsniper.de

Docker journey to Multi Arch + Multi OS
Create a multi-arch Docker image
Build a CI pipeline
Tips & Tricks
Agenda

whoami
Stefan Scherer
Sr. SoFware Engineer
SEAL Systems
Blog at stefanscherer.github.io
@stefscherer

What is a container?
Standardized packaging for
soFware and dependencies
Isolate apps from each other
Share the same OS kernel
Works for all major Linux 
distribuOons

Containers on all major platforms

docker container run
Hub
nginx microsoft/iis

docker container run - different OS
Hub
nginx microsoft/iis
⚡ ⚡LCOW FTW!

docker container run - different CPU architecture
Hub
nginx
⚡ ⚡
IBM s390
arm32v7/nginx

Manifest list: docker container run
Hub
me/myapp me/myappme/myapp

docker run portainer/portainer

Many official images are multi-arch now
Windows work in progress…

How to build container images?

docker image build / docker image push
Hub
me/myapp:linux me/myapp:windows

How to build the manifest list?

docker manifest command
Pull request https://github.com/docker/cli/pull/138
Docker 17.12 ?
manifest-tool from Phil Estes
Binaries at https://github.com/estesp/manifest-tool/releases
Availability

docker manifest create
Hub
me/myapp

docker manifest push
Hub
me/myapp

Demo 
building a multi-arch container image

How to build a CI pipeline for that?

Docker CI Pipeline for Linux and Windows
docker image push
git push
docker image push
Container 
Registry
Run Unit Tests
Build App
docker image build

Hub
Docker CI Pipeline for Linux and Windows
docker image push
git push
docker image push
Run Unit Tests
Build App
docker image build
Example: github.com/StefanScherer/whoami

Show the platforms of a Docker Hub image

Show the platforms of a Docker Hub image
Windows Server 2016
Windows Server 1709

Use node constraints in a hybrid cluster
services:
web:
image: microsoft/iis
deploy:
placement:
constraints:
- node.platform.os == windows

services:
web:
image: nginx
deploy:
placement:
constraints:
- node.platform.os == linux

"spec": {
"containers": [ {
"name": "iis",
"image": "microsoft/iis",
...
} ],
"nodeSelector": {
"beta.kubernetes.io/os": "windows"
}
}

docker image build
docker image push
docker image build
docker image push
docker manifest create
Recap
me/myapp
me/myapp:linux
me/myapp:windows

T H A N K Y O U !
Q U E S T I O N S ?
S T E FA N S C H E R E R
@ s t e f s c h e re r

Azure Meetup Stuttgart - Multi-arch Docker images

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