Add build github action

.github/workflows/build.yaml

@@ -0,0 +1,51 @@
+name: build_and_test
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  build_and_test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - uses: conda-incubator/setup-miniconda@v2
+        with:
+          python-version: 3.8
+          channels: conda-forge,defaults
+          channel-priority: strict
+          show-channel-urls: true
+
+      - name: Install conda packages used by this package
+        shell: bash -l {0}
+        run: |
+          conda install mamba
+          mamba install -y -q scons eups compilers
+
+      # We have two cores so we can speed up the testing with xdist
+      - name: Install pytest packages
+        shell: bash -l {0}
+        run: |
+          mamba install -y -q \
+            flake8 \
+            pytest pytest-flake8 pytest-xdist pytest-openfiles pytest-cov pytest-session2file
+
+      - name: List installed packages
+        shell: bash -l {0}
+        run: |
+          conda list
+          pip list -v
+
+      - name: Build and test
+        shell: bash -l {0}
+        run: |
+          setup -k -r .
+          scons -j2
+
+      - name: Upload coverage to codecov
+        uses: codecov/codecov-action@v2
+        with:
+          file: tests/.tests/pytest-sconsUtils.xml-cov-sconsUtils.xml