A vagrant-friendly Ubuntu 18.04 Docker build (this will upset the Docker blowhards - we violate Docker conventions on purpose)
We don't want to use Docker in production, but we do like how much faster it is than VirtualBox and fully-virtualized environments.
We wanted to use Docker instead of VirtualBox for our Vagrant workflow, along with Ansible. So, we did a thing.
It's actually pretty simple.
This image installs python and ssh-server.
Things we do:
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Insert Vagrant's default insecure key for the vagrant user
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Set up reasonable SSH services and configurations
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Use SystemD hack to expose SystemD upwards to Vagrant and the running Ansible system such that you can query running system services through Ansible's systemd/service modules
See our example Vagrantfile
ENV['VAGRANT_DEFAULT_PROVIDER'] = 'docker'
Vagrant.configure("2") do |config|
## Configure Docker provider for all vms
config.vm.provider "docker" do |d|
# d.build_dir = "./"
# d.git_repo =
d.image = 'armenr/ubuntu18.04-vagrant'
d.pull = true
d.has_ssh = true
d.remains_running = true
# Use these implicit port mappings at your own risk for multi-machine
# d.ports = [ "5044:5044" ]
end
## Using vanilla vagrant ssh settings & keys
config.ssh.username = 'vagrant'
config.vm.network :private_network, type: "dhcp", docker_network__internal: true
# NOTE - for later: https://github.com/devopsgroup-io/vagrant-hostmanager
# config.hostmanager.enabled = true
# config.hostmanager.manage_guest = true
# config.vm.provision :hostmanager
## Begin defining vms
## Sample docker1
config.vm.define :machine1 do |machine1|
machine1.vm.hostname = "machine1"
machine1.vm.provider "docker" do |d, override|
d.name = "machine1"
d.ports = [ "5044:5044" ]
d.link "machine2:machine2"
end
end
## Sample docker2
config.vm.define :machine2 do |machine2|
machine2.vm.hostname = "machine2"
machine2.vm.provider "docker" do |d, override|
d.name = "machine2"
d.ports = [ "5000:5000" ]
end
end
## End all vms
end