build in a container on Linux to preserve backward compatibility

Author: duncanpo

test/utils/terminateProcess.m

@@ -8,7 +8,11 @@ function terminateProcess(testCase, process, terminatecmd)
 end
 
 system(testCase.ListPid(process) + " > " + testCase.PidFile);
+type(testCase.PidFile);
 tbl = testCase.ReadPidList(testCase.PidFile);
+if isa(tbl, "table")
+   tbl.Properties.VariableNames
+end
 pid = testCase.ExtractPid(tbl);
 retry = 0;
 % sometimes kill will fail with a RuntimeError: windows-kill-library: ctrl-routine:findAddress:checkAddressIsNotNull 
@@ -22,7 +26,9 @@ function terminateProcess(testCase, process, terminatecmd)
     system(testCase.ListPid(process) + " > " + testCase.PidFile);
     type(testCase.PidFile);
     tbl = testCase.ReadPidList(testCase.PidFile);
-    tbl.Properties.VariableNames
+    if isa(tbl, "table")
+      tbl.Properties.VariableNames
+    end
     pid = testCase.ExtractPid(tbl);
     retry = retry + 1;
 end