ci: Update build workflow

.github/workflows/build.yml

@@ -2,19 +2,43 @@ name: Build
 
 on:
   push:
-    branches: ["*"]
-  pull_request:
-    branches: ["*"]
-
-env:
-  CARGO_TERM_COLOR: always
+    branches: [main]
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    name: Build - ${{ matrix.platform.release_for }}
+    strategy:
+      matrix:
+        platform:
+          - release_for: Linux-x86_64
+            os: ubuntu-20.04
+            target: x86_64-unknown-linux-gnu
+            command: build
+
+          - release_for: Windows-x86_64
+            os: windows-latest
+            target: x86_64-pc-windows-msvc
+            command: build
+
+    runs-on: ${{ matrix.platform.os }}
     steps:
-      - uses: actions/checkout@v3
-      - name: Build
-        run: cargo build --verbose
-      - name: Run tests
-        run: cargo test --verbose
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      # ripped from https://stackoverflow.com/a/64702025/15076207
+      - name: Cargo cache
+        uses: actions/cache@v3
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+            target
+          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+
+      - name: Build binary
+        uses: houseabsolute/actions-rust-cross@v0
+        with:
+          command: ${{ matrix.platform.command }}
+          target: ${{ matrix.platform.target }}
+          args: "--release"
+          strip: true