Change base to Ubuntu 22.04 LTS (jammy)

[forderud]

Done to upgrade CMake from 3.16.3 to 3.22.1.

Motiation: CMake 3.21 or newer is needed to build the Qt 6 sources with emscripten.

CI problem

CI is failing with a code signing error. I suspect that this is due to docker/docker-install#244, which is fixed by updating the Docker version on the CI node.

[kleisauke]

LGTM! I tested this locally on the wasm-vips project without any issues using:

$ docker build --network host --build-arg=EMSCRIPTEN_VERSION=3.1.26 -t emscripten/emsdk:3.1.26 -f docker/Dockerfile .
$ cd ~/wasm-vips
# Ensure we use the locally build Docker image
$ sed -i 's/docker build -t wasm-vips ./& --pull=false/' package.json
$ npm run build
$ npm run test

@sbc100 Feel free to merge if it looks good to you. Perhaps we should mention this in Emscripten's ChangeLog.md, something along?:

- The `emscripten/emsdk` Docker base image was updated from Ubuntu 20.04 LTS
  (Focal) to Ubuntu 22.04 LTS (Jammy). (emscripten-core/emsdk#1135)

[kleisauke]

Ah, I just noticed that a similar setup_remote_docker change is being done in #1117, so maybe we can land that PR before this.

[forderud]

I've now rebased the PR on top of main after #1117 was merged.

[forderud]

@kleisauke @sbc100 Is it possible to request release of a new Docker image that includes the Ubuntu 22.04 update?

[sbc100]

We normally do a release ever week or two.. it would be simplest if you could just wait for the next emsdk release?

In the interim, isn't it possible to simply point of the Dockerfile in this repo (i.e. just use it directly form here without needing a publication of dockerhub?) I'm not docker expert but I seem to remember it fairly easy to just directly use a dockerfile from git?

[forderud]

We normally do a release ever week or two.. it would be simplest if you could just wait for the next emsdk release?

I can live with that. Anyhow, thanks for your willingness to merge the Ubuntu upgrade so quickly. :-)

In the interim, isn't it possible to simply point of the Dockerfile in this repo (i.e. just use it directly form here without needing a publication of dockerhub?) I'm not docker expert but I seem to remember it fairly easy to just directly use a dockerfile from git?

Thanks for the tip. Will investigate it.