Saving ./test-suite.log

At least an attempt to save test suite logging.

For the record, main contributor: Melroy van den Berg

.github/workflows/linux.yaml

@@ -16,6 +16,11 @@ jobs:
           CC: ${{ matrix.compiler }}
         run: |
           test/test_build.sh alpine
+      - uses: actions/upload-artifact@v4
+        if: always()
+        with:
+          name: log-file
+          path: ./test-suite.log
 
   debian:
     strategy:
@@ -31,6 +36,11 @@ jobs:
           CC: ${{ matrix.compiler }}
         run: |
           test/test_build.sh debian
+      - uses: actions/upload-artifact@v4
+        if: always()
+        with:
+          name: log-file
+          path: ./test-suite.log
 
   fedora:
     strategy:
@@ -46,6 +56,11 @@ jobs:
           CC: ${{ matrix.compiler }}
         run: |
           test/test_build.sh fedora
+      - uses: actions/upload-artifact@v4
+        if: always()
+        with:
+          name: log-file
+          path: ./test-suite.log
 
   opensuse:
     strategy:
@@ -65,6 +80,11 @@ jobs:
           CC: ${{ matrix.compiler }}
         run: |
           test/test_build.sh opensuse
+      - uses: actions/upload-artifact@v4
+        if: always()
+        with:
+          name: log-file
+          path: ./test-suite.log
 
   ubuntu:
     strategy:
@@ -80,3 +100,8 @@ jobs:
           CC: ${{ matrix.compiler }}
         run: |
           test/test_build.sh ubuntu
+      - uses: actions/upload-artifact@v4
+        if: always()
+        with:
+          name: log-file
+          path: ./test-suite.log