Docker images cleanup at start.

- Cleanup docker images at start to free disk space. Otherwise it can happen that the invokers do not allow action execution as the free disk space is less than 85% during the tests.
- In case of an error during system test, add the controller and invoker logs to the build output.

.github/workflows/run-tests.yml

@@ -31,6 +31,13 @@ jobs:
           distribution: 'temurin'
           java-version: 8
 
+      - name: Docker Images Cleanup
+        run: |
+          df -h
+          docker image ls
+          docker image rm $(docker image ls -q) -f
+          df -h
+
       - name: befor install -> docker.sh
         run:  ./tools/travis/docker.sh
 
@@ -53,7 +60,11 @@ jobs:
       #  run: ./tools/travis/runUnitTests.sh && ./tools/travis/checkAndUploadLogs.sh unit db
 
       - name: script -> System Tests
-        run: ./tools/travis/runSystemTests.sh && ./tools/travis/checkAndUploadLogs.sh system
+        run: |
+          df -h \
+          && ./tools/travis/runSystemTests.sh \
+          && df-h \
+          && ./tools/travis/checkAndUploadLogs.sh system
 
       #- name: script -> Multi-Runtime Tests
       #  run: ./tools/travis/runMultiRuntimeTests.sh && ./tools/travis/checkAndUploadLogs.sh multi-runtime

tools/travis/runSystemTests.sh

@@ -34,3 +34,14 @@ export GRADLE_COVERAGE=true
 ./setupSystem.sh /ansible/files/runtimes-nodeonly.json
 
 ./runTests.sh
+
+if [[ "$?" != "0" ]]; then
+  # debugging notes
+  # || true;  set -x; docker ps -a; for i in $(docker ps -a --format="{{.Names}}"); do  docker logs $i || true; done; ls -alhR /tmp/wsklogs; 
+  # || true;  set -x; docker ps -a; ls -R /tmp/wsklogs ;cat /tmp/wsklogs/invoker0/invoker0_logs.log; cat /tmp/wsklogs/controller0/controller0_logs.log
+
+  set -x # show the following commands in the output
+  cat /tmp/wsklogs/invoker0/invoker0_logs.log
+  cat /tmp/wsklogs/controller0/controller0_logs.log
+  exit 1
+fi