About links at multi host x-networking

[woshihaoren]

Hi:
When I use only one docker-compose.yml up several different test environment.

docker-compose -p test --x-networking --x-network-driver overlay up -d
docker-compose -p test1 --x-networking --x-network-driver overlay up -d

WARNING:
"tomcat" defines links, which are not compatible with Docker networking and will be ignored.
Future versions of Docker will not support links - you should remove them for forwards-compatibility。

My application config jdbc://db:3306

docker-compose.yml

tomcat:
image: 'tomcat'
cpu_shares: 22
mem_limit: '1g'
links:
    - 'mysql:db'

mysql:
image: 'mysql'
cpu_shares: 22
mem_limit: '1g'

So container tomcat's hosts doesn't hava db alias, and it's test_mysql_1 test1_mysql_1,they are dynamic. I can's config.

When I use x-networking,How to make an alias?

[dnephin]

It's not supported yet. It's being tracked in #2312 and moby/libnetwork#737