Solomon Hykes shykes

## links.md

      
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                shykes
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              Last active
              December 24, 2015 03:09
                — forked from crosbymichael/links.md
            
          
    Links - Spec

Links are a way of expressing a relationship between one container and another.  When you link a container, you create a parent/child relationship between the two.  As a side effect links also allow you to name containers and reference them by name.  Containers can be references by more than one name.
Initially links will be expressed by injecting the child's data into the parent's environment accessible via namespaced variables:
####Examples

REDIS_ENV_{key}={value}
REDIS_PORT={value}


## gist:6557215
REDIS=$(docker run -d crosbymichael/redis)
docker run -link $REDIS:6379:redis -t -i 71cba4d74d62 bash

root@7c1879d423b6:/# cat app.py
import docker
from redis import Redis

ip, port = docker.require('redis')
r = Redis(host=ip, port=int(port))
	REDIS=$(docker run -d crosbymichael/redis)
	docker run -link $REDIS:6379:redis -t -i 71cba4d74d62 bash

	root@7c1879d423b6:/# cat app.py
	import docker
	from redis import Redis

	ip, port = docker.require('redis')
	r = Redis(host=ip, port=int(port))