Docker 1.13 includes several updates that improve the management of production environments, including a redesigned command line interface (CLI) and new system, plugin, and secret commands. The top-level CLI commands are now organized around common concepts like container, image, network and service. Docker 1.13 also introduces support for secrets in swarm mode and a --squash option to reduce image layers when building. The release makes experimental features fully supported.

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News about Docker 1.13
Gianluca Arbezzano
Software Engineer at CurrencyFair

2. 6 October 2016
© 2016 CurrencyFair Ltd
Docker 1.13 makes
production environment
good.

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CLI redesign
Docker CLI is always a privileged client for the daemon. Thousand
of users learn how to run contains with this tools:
docker run -it alpine sleep 10

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© 2016 CurrencyFair Ltd
CLI redesign
Advanced users or scripts to build complex solution:
find '/var/lib/docker/volumes/' -mindepth 1 -maxdepth 1 -type d | grep -vFf <(
docker ps -aq | xargs docker inspect | jq -r '.[]|.Mounts|.[]|.Name|select(.)'
)

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© 2016 CurrencyFair Ltd
But was time for a
little re-design

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© 2016 CurrencyFair Ltd
top level command
● checkpoint Manage checkpoints
● container Manage containers
● image Manage images
● network Manage networks
● node Manage Swarm nodes
● plugin Manage plugins
● secret Manage Docker secrets
● service Manage services
● stack Manage Docker stacks
● swarm Manage Swarm
● system Manage Docker
● volume Manage volumes
100% compatible with the old commands:
run, stop, start and so on
http://blog.arungupta.me/docker-1-13-management-commands/

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Keep your environment clean
docker system
docker system info == docker info
docker system event => to follow stream’s events from deamon
docker system prune => to clean your env from bad layers,
volumes and networks

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Plugins are out
of
experimental

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Experimental
is just a flag now!
Not a different build

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t-shirt time!

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Welcome compose v3
version: ‘3’
services:
micro:
image: gianarb/micro:1.2.0
deploy:
mode: replicated
replicas: 2
resources:
limits:
cpus: '0.25'
memory: 512M
reservations:
cpus: '0.25'
memory: 256M
restart_policy:
condition: on-failure
delay: 5s
max_attempts: 3
window: 120s
Compatible with Swarm mode
docker stack create
-c ./docker-compose.yml frontend

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Secrets are available in Swarm mode
docker secret create well ./secret.json
docker service create --secret well alpine sleep 1000
Secrets are running in directory /run

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© 2016 CurrencyFair Ltd
Squash layers
docker build --squash -t jenkins-sq .

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Demo
Time!

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© 2016 CurrencyFair Ltd
Questions?
● twitter.com/gianab
● github.com/gianarb/micro
● github.com/gianarb/docker-stack
● scaledocker.com
● gianarb.it/blog/docker-the-fundamentals