Add auto docs build with repository actions.

.forgejo/workflows/docs.yaml

@@ -0,0 +1,24 @@
+on:
+  push:
+    tags:
+      - "*"
+jobs:
+  build_docs:
+    runs-on: docker
+    container:
+      image: docker.zeptotech.net/zeptotech/zig-yarn:1.1.0
+      credentials:
+        username: ${{ vars.DOCKER_REGISTRY_USERNAME }}
+        password: ${{ secrets.DOCKER_REGISTRY_PASSWORD }}
+    steps:
+      - uses: actions/checkout@v4
+      - run: mkdir -p artifact/api
+      - run: (cd docs && corepack enable && yarn install)
+      - run: (cd docs && yarn docs:build)
+      - run: mv docs/.vitepress/dist/* artifact
+      - run: zig build docs
+      - run: mv zig-out/docs/* artifact/api
+      - uses: actions/upload-artifact@v4
+        with:
+          name: docs
+          path: artifact

docs/build.sh

@@ -1,4 +0,0 @@
-#!/bin/sh
-
-yarn docs:build
-(cd .vitepress/dist && tar cvzf docs.tar.gz * && mv docs.tar.gz ../..)