add binary build

.github/workflows/build.yml

@@ -0,0 +1,48 @@
+name: R-CMD-INSTALL-build
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  release:
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ ubuntu-latest, windows-latest, macOS-latest ]
+        R: [ '4.3' ]
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          submodules: recursive
+
+      - uses: r-lib/actions/setup-r@v2
+        with:
+          r-version: ${{ matrix.R }}
+          rtools-version: '43'
+
+      - uses: r-lib/actions/setup-r-dependencies@v2
+
+      - run: |
+          cd ..; R CMD INSTALL --build SeaLev 
+          mkdir SeaLev/R-${{ matrix.R }}
+          mv SeaLev_*.* SeaLev/R-${{ matrix.R }}/.
+        shell: bash
+        name: R CMD INSTALL
+
+      - uses: actions/upload-artifact@v2
+        with:
+          path: ./R-*
+
+      - uses: softprops/action-gh-release@v1
+        if: startsWith(github.ref, 'refs/tags/')
+        with:
+          files: |
+            ./R-*/*.tar.gz
+            ./R-*/*.tgz
+            ./R-*/*.zip
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}