Attempt i686 cross compilation on Github Actions release

.github/workflows/deploy.yml

@@ -8,6 +8,16 @@ on:
 jobs:
   deploy-windows:
     runs-on: windows-latest
+    strategy:
+      matrix:
+        conf:
+          - x86_64-pc-windows-msvc
+          - i686-pc-windows-msvc
+        include:
+          - conf: x86_64-pc-windows-msvc
+            target: x86_64-pc-windows-msvc
+          - conf: i686-pc-windows-msvc
+            toolchain: i686-pc-windows-msvc
     steps:
     - uses: actions/checkout@v2
     - uses: olegtarasov/get-tag@v2
@@ -15,22 +25,23 @@ jobs:
     - name: Install Rust
       uses: actions-rs/toolchain@v1
       with:
+        target: ${{ matrix.target }}
         profile: minimal
         toolchain: stable
         override: true
     - name: Build oxipng
       run: |
-        cargo build --release
+        cargo build --release --target ${{ matrix.target }}
         strip target/release/oxipng.exe
     - name: Create zip
       run: |
         $OXIPNG_PATH="$Env:GITHUB_WORKSPACE\target\release"
-        7z a oxipng-${{ steps.tagName.outputs.tag }}-x86_64-pc-windows-msvc.zip "$OXIPNG_PATH\oxipng.exe"
+        7z a oxipng-${{ steps.tagName.outputs.tag }}-${{ matrix.target }}.zip "$OXIPNG_PATH\oxipng.exe"
     - name: Create a release
       uses: softprops/action-gh-release@v1
       with:
         name: ${{ steps.tagName.outputs.tag }}
         files: |
-          oxipng-${{ steps.tagName.outputs.tag }}-x86_64-pc-windows-msvc.zip
+          oxipng-${{ steps.tagName.outputs.tag }}-${{ matrix.target }}.zip
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}