Test conda environment on Ubuntu and MacOS, Windows failing as Opensl…

…ide is not available via conda

* Test conda environment on all operating systems

* First check out repo

* Try to run conda commands on all platforms with bash

* Openslide not available via conda on Windows

.github/workflows/test-env.yaml

@@ -0,0 +1,28 @@
+name: Test Env
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main, "release/*", "dev"]
+
+jobs:
+  run_env_tests:
+    name: Test Env (${{ matrix.os }})
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        # os: ["ubuntu-latest", "macos-latest", "windows-latest"]  # Openslide not available via conda on Windows
+        os: ["ubuntu-latest", "macos-latest"]
+    steps:
+      - uses: actions/checkout@v4
+      - uses: conda-incubator/setup-miniconda@v3
+        with:
+          activate-environment: test
+          environment-file: environment.yaml
+          auto-activate-base: false
+      - shell: bash -l {0}
+        run: |
+          conda info
+          conda list