Rewrite example release workflow to the proven subpath-safe pattern

Manual clone + docker build + docker cp instead of actions/checkout and
'uses:' (both broken by the /git subpath). Pins packager @v1.

examples/release.yml

@@ -3,11 +3,15 @@
 # and attaches it to a matching Gitea release.
 #
 # Requires: Actions enabled on the repo, and a runner advertising `ubuntu-latest`
-# (or change runs-on to a label your act_runner registers).
+# with Docker available.
 #
-# NOTE: octowow.st is served under the /git subpath. act_runner reports
-# GITHUB_SERVER_URL without it, breaking checkout and the release API calls, so
-# we pin GITHUB_SERVER_URL below. Drop this once the server's ROOT_URL is fixed.
+# NOTE on octowow.st: the instance is served under the /git subpath, but Gitea
+# generates URLs without it, which breaks actions/checkout and `uses:` action
+# resolution. So this workflow avoids both: it clones manually against the
+# correct base and runs the packager via `docker build` + `docker cp` (bind
+# mounts don't work either — the inner docker uses the host daemon). Once the
+# server's ROOT_URL is fixed, this can be simplified to actions/checkout +
+# `uses: paste/mpq-packager@v1`.
 
 name: Release MPQ
 on:
@@ -18,39 +22,48 @@ on:
 jobs:
   package:
     runs-on: ubuntu-latest
-    env:
-      GITHUB_SERVER_URL: https://octowow.st/git
     steps:
-      - name: Checkout
-        uses: actions/checkout@v4
+      - name: Checkout (manual; instance under /git)
+        run: |
+          git init -q .
+          git remote add origin "https://gitea:${{ secrets.GITHUB_TOKEN }}@octowow.st/git/${{ github.repository }}.git"
+          git fetch -q --depth 1 origin "${{ github.ref }}"
+          git checkout -q FETCH_HEAD
+
+      - name: Build packager image
+        run: |
+          git clone -q --depth 1 --branch v1 \
+            "https://gitea:${{ secrets.GITHUB_TOKEN }}@octowow.st/git/paste/mpq-packager.git" /tmp/packager
+          docker build -q -t mpq-packager /tmp/packager
 
       - name: Build patch MPQ
-        id: pack
-        uses: paste/mpq-packager@v1
-        with:
-          manifest: mpq.yaml
-          version: ${{ github.ref_name }}
+        run: |
+          set -euo pipefail
+          cid=$(docker create \
+            -e INPUT_MANIFEST=mpq.yaml \
+            -e INPUT_VERSION=${{ github.ref_name }} \
+            -e INPUT_OUT_DIR=/work/dist \
+            -e GITHUB_WORKSPACE=/work \
+            mpq-packager)
+          docker cp . "$cid:/work"
+          docker start -a "$cid"
+          docker cp "$cid:/work/dist/patch-Z.mpq" ./patch-Z.mpq
+          docker rm "$cid" >/dev/null
+          ls -l patch-Z.mpq
 
       - name: Create release and upload asset
         env:
           TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
           set -euo pipefail
-          API="${GITHUB_SERVER_URL}/api/v1/repos/${GITHUB_REPOSITORY}"
-          TAG="${GITHUB_REF_NAME}"
-          MPQ="${{ steps.pack.outputs.mpq-path }}"
-          NAME="${{ steps.pack.outputs.mpq-name }}"
-
-          echo "Creating release $TAG"
+          API="https://octowow.st/git/api/v1/repos/${{ github.repository }}"
+          TAG="${{ github.ref_name }}"
           RID=$(curl -fsSL -X POST "$API/releases" \
-            -H "Authorization: token $TOKEN" \
-            -H "Content-Type: application/json" \
+            -H "Authorization: token $TOKEN" -H "Content-Type: application/json" \
             -d "{\"tag_name\":\"$TAG\",\"name\":\"$TAG\",\"draft\":false,\"prerelease\":false}" \
             | python3 -c 'import sys,json;print(json.load(sys.stdin)["id"])')
-
-          echo "Uploading $NAME to release $RID"
-          curl -fsSL -X POST "$API/releases/$RID/assets?name=$NAME" \
+          curl -fsSL -X POST "$API/releases/$RID/assets?name=patch-Z.mpq" \
             -H "Authorization: token $TOKEN" \
             -H "Content-Type: application/octet-stream" \
-            --data-binary "@$MPQ"
-          echo "Done."
+            --data-binary "@patch-Z.mpq"
+          echo "Released $TAG with patch-Z.mpq"