DNS Names for your containers
labels section of the docker-compose file you can specify labels that will control the DNS name of your
containers. DNS names are in the format of
[name].[image].vm (e.g web.devtools.vm)
com.dnsdock.name- This is the type of container. Usually something like web, db, cache, etc.
com.dnsdock.image- This is generally your project name (e.g devtools, drupal, etc.)
All DNS names of devtools containers will end in .vm
If you need multiple domains mapped to a container you can use the
com.dnsdock.alias setting. It takes a full domain
name and can take a comma separated list (e.g. otherhost.devtools.vm or alexandria.phase2.vm). Additionally, dnsdock
supports longer domain queries meaning if you have a service named web.devtools.vm, you can also use
something.web.devtools.vm and it will resolve to the same IP address.
For all other DNS configuration options, please see the dnsdock label documentation
DevTools can be configured to use additional name servers to forward DNS requests if the record cannot be resolved by dnsdock.
An example is if you connect to a VPN and need to resolve addresses to private servers within a VPN. To enable this you
need to configure the
DEVTOOLS_NAMESERVERS environment variable to a comma separated list of ip:port
10.10.7.2:53,188.8.131.52:53) before running either
devtools start or
devtools dns. We suggest putting this
env var configuration in your
~/.zshrc so that it is always present when needed. If you just need this
temporarily, you can pass the configuration in with the
--nameservers command line option to
devtools start or
This configuration will try each forwarder name server, in order, to resolve names until success or all name servers have been exhausted.
There is also a
devtools dns command that will launch and configure our DNS services on any Docker Host. If you want to
configure DNS on a Docker Host other than dev be sure to specify the
If you want to see what containers have registered names, use the
devtools dns-records command. This command will list
all registered container names and aliases along with the container's IP address.