for very fast feedback loops 

physical servers ● 4w to order ● 1w to install operating system ● 2d to re-install manually / 2h automated virtual servers ● 2d to re-install manually / 2h automated docker ● 1s to re-install 

DOCKER_HOST=tcp://127.0.0.1:2375 ● start in a minute (hint: use vagrant) vagrant init yungsang/boot2docker vagrant up ● edit code in OS X / Win ● execute in clean Linux ● rinse - repeat ● very fast manual testing environments boot2docker 

docker volumes docker help run -v, --volume=[] Bind mount a volume (e.g., from the host: -v /host:/container, from docker: -v /container) --volumes-from=[] Mount volumes from the specified container(s) ● test live-edited code ● multivariate testing (for foos/multi-platform/multi-customer) ● zero time deploy 

sync or async docker help run -a, --attach=[] Attach to stdin, stdout or stderr. -d, --detach=false Detached mode: Run container in the background, print new container id --rm=false Automatically remove the container when it exits (incompatible with -d) ● parallel multivariate tests ● loop over synchronous tests for sut in centos:centos6 ubuntu:trusty; do docker run -v /tests:/tests $sut /tests/run.sh done 

ready environments ● docker run dockerfile/… ○ ruby ○ python ○ nodejs / nodejs-bower-grunt ○ java 

throw-away servers ● docker run devopsil/puppetmaster ● docker run dockerfile/… ○ elasticsearch ○ redis ○ mongodb ○ mariadb 

● kitchen.ci + portertech/kitchen-docker --- driver: name: vagrant docker provisioner: name: chef_zero platforms: - name: ubuntu-13.04 - name: centos-6.5 suites: - name: client run_list: - recipe[postgresql::client] - name: server run_list: - recipe[postgresql::server] test kitchen 

continuous integration ● your docker, their test hardware ○ circleci.com/docs/docker ○ shippable.com ● npmt.abru.pt - auto test for npms (using docker) ● wiki.jenkins-ci.org/display/JENKINS/Docker+Plugin 

image auto-build hub.docker.com 

quay.io - private image repo 

link to slides dvps.me/docker-rapid-feedback 

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