buildx VS UTM

This is great! I’ve been waiting a long time for this and it seems like more debug features are in the pipeline too: https://github.com/docker/buildx/issues/1104

Docs: https://docs.docker.com/engine/reference/commandline/buildx_...

Container engine: Docker v23.0.4 | Buildx v0.10.4

ARCH=amd64 # change to 'arm64' for M1 VERSION=v0.10.4 curl -LO https://github.com/docker/buildx/releases/download/${VERSION}/buildx-${VERSION}.darwin-${ARCH} mkdir -p ~/.docker/cli-plugins mv buildx-${VERSION}.darwin-${ARCH} ~/.docker/cli-plugins/docker-buildx chmod +x ~/.docker/cli-plugins/docker-buildx docker buildx version # verify installation

wget -O /tmp/docker/cli-plugins/docker-buildx https://github.com/docker/buildx/releases/tag/v0.10.4/buildx-v0.10.4.linux-amd64

Your particular one looks somewhat like https://github.com/docker/buildx/issues/1595.

Now, we have examples of the actual definitions for a single application’s docker container. Notice that we set the contexts key here which references the dependency targets we just defined. You can basically think of this like the depends_on block if you’ve used Terraform before. The args key let’s us populate the ARG variables in the Dockerfile. This is what is ultimately different between each of the containers. In the future, the buildx team might support using for_each loops like in Terraform but for now each block will have a bit of duplication.

Now as bonus we i will add how to use this techniques to build a multi arch build container. Maybe you have the same application but you need to run it in arm or riscv architecture. For this we can use the buildx plugin from docker https://github.com/docker/buildx.

Third step is docker/setup-buildx-action configures buildx, which is a Docker CLI plugin that provides enhanced build capabilities.

If you have TrollStore then install the HV version of UTM to try for yourself: https://github.com/utmapp/UTM/releases/latest/download/UTM.HV.ipa

Researching a little showed that this is basically what can be expected running x86 emulation and the systems will just be wonky and slow, although it was running flawlessly, just slow.

There seem to be ways to use Rosetta2 inside a VM [0] to then translate binaries but I found no official support or documentation (using UTM+QEMU that was), this would be such a cool feature, at least there are discussions about it [1,2]

- [0] https://mybyways.com/blog/using-rosetta-in-a-utm-linux-vm-wi...

- [1] https://github.com/utmapp/UTM/discussions/4939

- [2] https://github.com/utmapp/UTM/issues/5460

UTM is open source too though: https://github.com/utmapp/UTM#license

UTM makes it easy to set up and manage macOS and Windows virtual machines. This can be especially useful for developers such as Tauri contributors who need to test their applications across multiple platforms, or for those looking to experiment with different operating systems without affecting their primary system.

If you don't need high performance and want to use the OS only occasionally, check UTM.app, at https://mac.getutm.app/ (or https://github.com/utmapp/UTM ). Free, open source.