Make rust based implementations work in the docker container

[krausest]

@Pauan I've opened that issue for working on the rust based frameworks.

The ultimate goal is to perform the build in the docker containter (#546 (comment)).
Here are the (erratic) steps I tried so far:
npm install --save-dev rimraf webpack webpack-cli @wasm-tool/wasm-pack-plugin
Use rust-up to install rust (will be baked into the docker image at some point)
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
Is there a better way to get a specific version?
source $HOME/.cargo/env

Now rust seems to be installed:

[root@550cf95bb54a dominator]# rust -V
bash: rust: command not found
[root@550cf95bb54a dominator]# rustc -V
rustc 1.35.0 (3c235d560 2019-05-20)
[root@550cf95bb54a dominator]# 

Then try to build:
npm run build-force:

[root@550cf95bb54a dominator]# npm run build-prod-force

> [email protected] build-prod-force /build/frameworks/keyed/dominator
> rimraf bundled-dist pkg && webpack

🧐  Checking for wasm-pack...

ℹ️  Installing wasm-pack 

wasm-pack error: undefined

ERROR in ./js/index.js
Module not found: Error: Can't resolve '../pkg/index.js' in '/build/frameworks/keyed/dominator/js'
npm ERR! code ELIFECYCLE
npm ERR! errno 2
npm ERR! [email protected] build-prod-force: `rimraf bundled-dist pkg && webpack`
npm ERR! Exit status 2
npm ERR! 
npm ERR! Failed at the [email protected] build-prod-force script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /root/.npm/_logs/2019-06-23T15_44_37_758Z-debug.log

[Pauan]

In the README I give the exact directions. You have to manually install wasm-pack from here (for example by using curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh).

After rustup and wasm-pack are installed, you need to run these commands:

rustup toolchain install nightly
rustup override set nightly
npm install
npm run build-prod-force

And that should work.

It is possible to use rustup to download a specific version of the Rust toolchain. For example, rather than using nightly you can instead use rustup toolchain install nightly-2019-06-23

And then you need to use rustup override set nightly-2019-06-23 to enable it.

[krausest]

Thanks - it worked when installed manually. Now I'll try to somehow integrate it into to the docker build (might take some days). I'll report back.

[krausest]

Thanks to @Pauan rust build work in the docker container.
Only non-keyed/stdwdeb still needs updating. I'll check the next few days if I can build it like the keyed version.

[Pauan]

Oops, I overlooked non-keyed/stdweb, I'll send a PR.

[krausest]

Great - thanks!