Update Docker actions in GitHub Workflow

Added distinct Docker run actions for valid and invalid CSV file validation in the GitHub workflows main.yml file. Extended the workflow steps to individually deal with valid and invalid CSV files. Related image and volume parameters have been adjusted accordingly to run the validation tests properly.

.github/workflows/main.yml

@@ -227,8 +227,25 @@ jobs:
       - name: 🐳 Building Docker Image
         run: make build-docker
 
-      - name: Trying to use the Docker Image
+      - name: Test help and logo
         run: docker run --rm jbzoo/csv-blueprint --ansi
 
-      - name: Reporting example via Docker
-        run: ! make demo-docker --no-print-directory
+      - name: 👍 Valid CSV file
+        run: |
+          docker run --rm                                       \
+          -v `pwd`:/parent-host                                 \
+          jbzoo/csv-blueprint                                   \
+          validate:csv                                          \
+          --csv=/parent-host/tests/fixtures/demo.csv            \
+          --schema=/parent-host/tests/schemas/demo_valid.yml    \
+          --ansi
+
+      - name: 👎 Invalid CSV file
+        run: |
+          ! docker run --rm                                     \
+          -v `pwd`:/parent-host                                 \
+          jbzoo/csv-blueprint                                   \
+          validate:csv                                          \
+          --csv=/parent-host/tests/fixtures/demo.csv            \
+          --schema=/parent-host/tests/schemas/demo_invalid.yml  \
+          --ansi