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feat(cli): support building WASM via podman

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Previously, `tree-sitter build-wasm` had the ability to build WASM
by using docker to pull in an image with a complete emscripten toolchain.
This commit adds the ability to use podman to do the same thing.

Using podman requires two notable changes:
1. Using the fully-qualified image name. Docker defaults to prepending
    `docker.io` to the image name, but podman does not.
2. Podman will mount the `/src/` volume as belonging to root unless
  `--userns=keep-id` is passed. I think podman's different
  volume-ownership is related to podman's daemonless execution and
  `--uidmap` functionality, but I'm not 100% sure.

To test, I ran
```sh
script/fetch-fixtures
script/generate-fixtures
script/generate-fixtures-wasm # <- the important one!
```

which worked as well as the docker version.
This commit is contained in:
Steven Kalt 2023-12-08 19:42:53 -05:00 • committed by Amaan Qureshi
parent 78c297e6ed
commit d35efd4608
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5 changed files with 119 additions and 49 deletions
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lib/binding_web/README.md
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@ -112,7 +112,7 @@ const tree = parser.parse((index, position) => {
The following example shows how to generate `.wasm` file for tree-sitter JavaScript grammar.
**IMPORTANT**: [emscripten](https://emscripten.org/docs/getting_started/downloads.html) or [docker](https://www.docker.com/) need to be installed.
**IMPORTANT**: [emscripten](https://emscripten.org/docs/getting_started/downloads.html), [docker](https://www.docker.com/), or [podman](https://podman.io) need to be installed.
First install `tree-sitter-cli` and the tree-sitter language for which to generate `.wasm` (`tree-sitter-javascript` in this example):