Refactor build workflow to install Godot and export templates directly from GitHub releases

.gitea/workflows/build.yml

@@ -14,9 +14,8 @@ env:
 jobs:
   build:
     name: Export ${{ matrix.platform }}
+    # Node-capable image so JS actions (checkout, upload-artifact) work on Gitea act_runner.
     runs-on: ubuntu-latest
-    container:
-      image: barichello/godot-ci:4.3
     strategy:
       fail-fast: false
       matrix:
@@ -33,11 +32,23 @@ jobs:
         with:
           lfs: true
 
-      - name: Install export templates
+      - name: Install Godot ${{ env.GODOT_VERSION }} + export templates
         run: |
-          mkdir -p ~/.local/share/godot/export_templates/${GODOT_VERSION}.stable
-          cp -r /root/.local/share/godot/export_templates/${GODOT_VERSION}.stable/* \
-            ~/.local/share/godot/export_templates/${GODOT_VERSION}.stable/ || true
+          set -euxo pipefail
+          GODOT_REL="${GODOT_VERSION}-stable"
+          BASE="https://github.com/godotengine/godot/releases/download/${GODOT_REL}"
+          # Editor (headless export uses the editor binary)
+          curl -fSL -o godot.zip "${BASE}/Godot_v${GODOT_REL}_linux.x86_64.zip"
+          unzip -o godot.zip
+          mv "Godot_v${GODOT_REL}_linux.x86_64" /usr/local/bin/godot
+          chmod +x /usr/local/bin/godot
+          godot --version
+          # Export templates
+          curl -fSL -o templates.tpz "${BASE}/Godot_v${GODOT_REL}_export_templates.tpz"
+          unzip -o templates.tpz
+          TPL_DIR="${HOME}/.local/share/godot/export_templates/${GODOT_VERSION}.stable"
+          mkdir -p "${TPL_DIR}"
+          mv templates/* "${TPL_DIR}/"
 
       - name: Import project (build resource cache)
         run: godot --headless --import
@@ -45,8 +56,9 @@ jobs:
 
       - name: Export ${{ matrix.platform }}
         run: |
-          mkdir -p build/${{ matrix.platform }}
-          godot --headless --export-release "${{ matrix.preset }}" build/${{ matrix.platform }}/${{ matrix.output }}
+          set -euxo pipefail
+          mkdir -p "build/${{ matrix.platform }}"
+          godot --headless --export-release "${{ matrix.preset }}" "build/${{ matrix.platform }}/${{ matrix.output }}"
 
       - name: Upload artifact
         uses: actions/upload-artifact@v3