Add GHA workflow to run check_datasets_xml on push

.github/workflows/check-datasets-xml.yaml

@@ -0,0 +1,37 @@
+name: check-datasets-xml
+
+on:
+  push:
+    branches: [ '*' ]
+  # Enable workflow to be triggered from GitHub CLI, browser, or via API
+  # primarily for testing conda env solution for new Python versions
+  workflow_dispatch:
+
+jobs:
+  check-datasets-xml:
+    permissions:
+      contents: read
+      pull-requests: write
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: [ '3.12' ]
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Conda environment with Micromamba
+        uses: mamba-org/setup-micromamba@54d4d5980e1a4aa7cdc8b050cf2d19b7e262ce18
+        with:
+           environment-file: envs/environment-test.yaml
+           environment-name: erddap-datasets-test
+           cache-environment: true
+           cache-downloads: true
+           # persist downloads cache for 1 day
+           cache-downloads-key: downloads-${{ steps.date.outputs.date }}
+           create-args: >-
+             python=${{ inputs.python-version }}
+
+      - name: Run check_datasets_xml.py
+        run: python check_datasets_xml.py

envs/environment-test.yaml

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+# conda environment description file for Serddap-datasets testing environment
+#
+# Creates a conda environment in which the check_datasets_xml module can be run.
+# Primarily intended for creation of a conda env for use in a GitHub Actions workflow.
+
+name: erddap-datasets-test
+
+channels:
+  - conda-forge
+  - nodefaults
+
+dependencies:
+  - bottleneck
+  - jupyterlab
+  - lxml
+  - netcdf4
+  - pip
+  - python=3.12
+  - pyyaml
+  - rich
+  - structlog
+  - xarray