feat(infra): went back to alpine and removed package.json merging

- Actually using pnpm workspace...
- Use alpine on both runner and builder container
- runner using lockfile generated by builder container

src/@shared/scripts/merge.js

@@ -1,23 +0,0 @@
-#!/usr/bin/env node
-
-import fs from 'node:fs/promises'
-
-const merge_json = (prev, cur) => {
-	const keys = ["dependencies", "devDependencies"];
-	const out = {};
-
-	for (let k of keys)
-		out[k] = Object.assign(prev[k] ?? {}, cur[k] ?? {});
-	return out;
-};
-
-const promises = process.argv.slice(2).map(f => fs.readFile(f, { encoding: "utf8" }));
-const jsons = (await Promise.all(promises)).map(JSON.parse);
-const deps = jsons.reduce(merge_json, {});
-
-const out = Object.assign(deps, {
-	private: true,
-	name: "stub",
-});
-
-console.log(JSON.stringify(out));