docker.network resource

[ryane]

Support for creating docker networks. Currently with Converge, you can only configure communication between containers using the legacy links feature.

[BrianHicks]

@ryane could you sketch out what this and #299 would look like in concert with the rest of the Docker modules?

[ryane]

example hcl for a docker.network resource:

docker.network "elk" {
  name = "elk"

  # optional
  driver      = "bridge"
  subnet      = "192.168.123.0/24"
  gateway     = "192.168.123.1"
  ip_range    = "192.168.123.0/28"
  internal    = false
  ipam_driver = ""
  enable_ipv6 = false

  aux_address {
    router  = "192.168.123.5"
    printer = "192.168.123.4"
  }

  labels {
    name = "elk"
    env  = "production"
  }

  options {
    "com.docker.network.bridge.enable_icc"           = "true"
    "com.docker.network.bridge.enable_ip_masquerade" = "true"
  }

  ipam_options {}

  force = true # will recreate the network if one with the same name exists and has diffs
}

A container would be able to connect to that network with a lookup:

docker.container "elasticsearch-container" {
  name    = "elasticsearch"
  image   = "elasticsearch:2.4.0"
  network = "{{lookup `docker.network.elk.name`}}"
  force   = "true"
}

Thoughts?