workflow: build win10 binary on release

.github/workflows/release.yml

@@ -47,4 +47,34 @@ jobs:
           upload_url: ${{ needs.release.outputs.upload_url }}
           asset_path: build/ttyd
           asset_name: ttyd.${{ matrix.target }}
-          asset_content_type: application/octet-stream
+          asset_content_type: application/octet-stream
+  win10:
+    runs-on: windows-latest
+    needs: release
+    steps:
+      - uses: actions/checkout@v2
+      - uses: msys2/setup-msys2@v2
+        with:
+          msystem: MINGW64
+          install: >-
+            make
+            mingw64/mingw-w64-x86_64-gcc
+            mingw64/mingw-w64-x86_64-cmake
+            mingw64/mingw-w64-x86_64-zlib
+            mingw64/mingw-w64-x86_64-libuv
+            mingw64/mingw-w64-x86_64-mbedtls
+            mingw64/mingw-w64-x86_64-json-c
+          update: true
+      - name: Build ttyd
+        shell: msys2 {0}
+        run: ./scripts/mingw-build.sh
+      - name: Upload assets
+        id: upload-release-asset
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ needs.release.outputs.upload_url }}
+          asset_path: build/ttyd.exe
+          asset_name: ttyd.win10.exe
+          asset_content_type: application/octet-stream