java retry on fail

jest.config.js

@@ -7,5 +7,5 @@ module.exports = {
   coverageProvider: "v8",
   testEnvironment: "jsdom",
   preset: "ts-jest",
-  testTimeout: 10000
+  testTimeout: 15000
 };

src/fhirValidator.ts

@@ -42,7 +42,12 @@ async function runValidatorJRE(artifactPath: string): Promise<CommandResult | nu
 
     fs.copyFileSync(`./${validatorJarFile}`, tempJarFile);
 
-    const result: CommandResult = await runCommand(`java -jar ./${tempJarFile} ./${artifactPath}`, `Running HL7 FHIR validator with JRE`, log);
+    let result: CommandResult = await runCommand(`java -jar ./${tempJarFile} ./${artifactPath}`, `Running HL7 FHIR validator with JRE`, log);
+
+    if (result.exitCode) {
+        result = await runCommand(`java -jar ./${tempJarFile} ./${artifactPath}`, `Running HL7 FHIR validator with JRE`, log);
+    }
+
 
     fs.rmSync(tempJarFile);