I have a project written in Golang using the Fyne framework. I am aware of the issues that are related to X11 when trying to Dockerize these type of applications. Here is my Dockerfile:
FROM golang:1.20
WORKDIR /app
COPY . .
RUN go mod download
RUN apt-get update && apt-get install -y libgl1-mesa-dev xorg-dev x11-apps dbus-x11 xvfb make
RUN make
# my Golang app takes in a single command line argument hence the ENTRYPOINT.
# specifically, the command line argument is an address the application will use.
ENTRYPOINT ["./cmd/server/server"]
Here is how I am running it:
docker run -e DISPLAY=$DISPLAY -p 8080:3000 --net=host red "localhost:3000"
However, this seems to cause the error:
PlatformError: X11: Failed to open display :0
panic: NotInitialized: The GLFW library is not initialized
I am also aware of the available fyne-cross project. I attempted to use that and ran into more problems as well. I would like to try Dockerize this project myself however.
I've tried doing xhost + local:docker (I know, not secure) however the same error pops up.
I have also tried:
docker run -it --rm -e DISPLAY=$DISPLAY -v /tmp/.X11-unix:/tmp/.X11-unix red "localhost:3000"
I've also tried with and without the --net=host. I saw this solution in another post but it didn't seem to do anything. For context, I am on Ubuntu.
To my knowledge X11 forwarding does not expose the OpenGL driver necessary to run a Fyne application. This is similar to the open issue that a Fyne app cannot be launched from headless Linux.