The fyne-cross-image is the next generation of Docker image for building and compiling Fyne⁠ based applications for cross-platform deployment. This image is built from an independent repository⁠ and uses the Zig compiler to build the application native dependencies. The fyne-cross-image is designed to be smaller and more efficient than the legacy fyne-cross container image and does not require as much specific data per targeted architecture.

The fyne-cross-image includes all the necessary dependencies and toolchains required to build Fyne based applications for various platforms, such as Windows, MacOS, Linux, Android, iOS, and the Web. It's worth noting that this Docker image is designed for Fyne v2.x and fyne-cross v1.4 or later.

To use this image, you should install fyne-cross:

go install github.com/fyne-io/fyne-cross@latest

Then you can build your fyne application for Windows with the following command line for example:

fyne-cross windows

One of the advantages of using the fyne-cross-image is that it is much smaller in size compared to the legacy fyne-cross container image. This is because the fyne-cross-image uses the Zig compiler which has great cross platform support. Overall, the fyne-cross-image is a great tool for developers who want to build and test their Fyne applications in a consistent and reproducible environment, without worrying about the complexities of setting up their local development environment.

The fyne-cross-image is following now an independent release cycle from the fyne-cross tool.