Running docker-compose against WSL2
Just adding a quick note for myself here. I wanted to run against docker host on WSL2 and docker compose connects to DockerDesktopVM instance by default (the full virtual machine). What I wanted to try is to run Docker Compose experience without the virtual machine utilizing the new WSL2 capabilities.
Scott Hanselman has a good write-up about this feature.
And now my containers managed by compose are running under the lightweight WSL2 model. The full-blown Docker virtual machine can be shutdown while using in this WSL2 mode.
If you want permanently target the WSL2 engine, you can also set environment variable DOCKER_HOST to point to this npipe protocol address.
Scott Hanselman has a good write-up about this feature.
Prequisities
- Windows 10 insider build from the fast ring (at the time of writing), build 18932 or newer
Enable-WindowsOptionalFeature -Online -FeatureName VirtualMachinePlatform- Install Ubuntu 18.04 from Windows Store, ensure it has the correct WSL version
wsl --set-version Ubuntu-18.04 2- To make life easier, make the new version default
wsl --set-default-version 2- Install Docker Desktop WSL 2 Technical Preview
Run docker-compose targeting the Linux WSL2 docker host
The key is to use the -H parameter, when you are hosting both the Virtual Machine and lightweight WSL2 version.
docker-compose -H "npipe:////./pipe/docker_wsl" up -d
And now my containers managed by compose are running under the lightweight WSL2 model. The full-blown Docker virtual machine can be shutdown while using in this WSL2 mode.
If you want permanently target the WSL2 engine, you can also set environment variable DOCKER_HOST to point to this npipe protocol address.
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