Docker Experiments
This repo is a set of notes and configs/code for the Docker tutorials found at https://docs.docker.com/get-started/.
About Docker Toolbox
The Docker Desktop tools will only work on 64-bit systems with CPU hardware virtualization and a compatible hypervisor installed. On Windows, this means using an edition that includes Hyper-V.
When running Windows 10 Home, Hyper-V is not available so Docker Desktop won't work. In this situation, use the legacy Docker Toolbox instead. Docker Toolbox will also run on Windows 7, which did not have the Hyper-V feature available in any edition.
Docker Toolbox installs VirtualBox and sets up a Docker Machine with that. There are a few extra things to bear in mind.
Don't try localhost
When following the tutorials, it will mention connecting to http://localhost:4000 to view the container's ouput. This won't work using Docker Toolbox and instead you must connect to the Docker Machine's IP address instead. Find this with the command
$ docker-machine ip
Don't use Edge
Similarly to the above, the Microsoft Edge browser fails to connect even when using the Docker Machine's IP address. Vivaldi works fine, so any Chromium-based browser should also be fine.
Multiple network interfaces
The command docker swarm init may return an error message such as:
$ docker swarm init
Error response from daemon: could not choose an IP address to advertise since this system has multiple addresses on different interfaces (10.0.2.15 on eth0 and 192.168.99.100 on eth1) - specify one with --advertise-addr
In this case, find the default Docker Machine IP address with docker-machine ip and use this or its interface name in the swarm init command:
$ docker swarm init --advertise-addr eth1
Note that the IP address should match the "default" machine shown when running docker-machine ls.