updated github release

Author: Chris

.github/workflows/release.yml

@@ -0,0 +1,82 @@
+name: release
+
+on:
+  push:
+    tags:
+      - "v*"
+
+permissions:
+  contents: write  # create GH release + upload assets
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        target:
+          - x86_64-unknown-linux-gnu
+          - aarch64-unknown-linux-gnu
+          - x86_64-apple-darwin
+          - aarch64-apple-darwin
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: ${{ matrix.target }}
+
+      - uses: taiki-e/install-action@v2
+        with:
+          tool: cross
+
+      - name: Build
+        run: cross build --release --target ${{ matrix.target }}
+
+      - name: Package
+        shell: bash
+        run: |
+          set -eux
+          VERSION="${GITHUB_REF_NAME}"               # e.g. v0.1.1
+          TARGET="${{ matrix.target }}"
+          OUTDIR="dist"
+          mkdir -p "$OUTDIR"
+
+          BIN="target/$TARGET/release/canine"
+
+          PKG="canine_${VERSION}_${TARGET}"
+          mkdir -p "$PKG"
+          cp "$BIN" "$PKG/"
+
+          tar -czf "$OUTDIR/$PKG.tar.gz" "$PKG"
+
+      - name: Upload artifacts to workflow run
+        uses: actions/upload-artifact@v4
+        with:
+          name: dist-${{ matrix.target }}
+          path: dist/*.tar.gz
+
+  release:
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - name: Download all artifacts
+        uses: actions/download-artifact@v4
+        with:
+          path: dist
+
+      - name: Flatten dist
+        shell: bash
+        run: |
+          set -eux
+          mkdir -p out
+          find dist -name "*.tar.gz" -exec cp {} out/ \;
+          (cd out && shasum -a 256 *.tar.gz > SHA256SUMS)
+
+      - name: Create GitHub Release
+        uses: softprops/action-gh-release@v2
+        with:
+          files: |
+            out/*.tar.gz
+            out/SHA256SUMS
+