Boyscouting (#558)

* Boyscouting: Docker conventions

* Boyscouting: JUnit 5 conventions ("It is generally recommended to omit the public modifier for test classes, test methods, and lifecycle methods unless there is a technical reason for doing so)"

* Boyscouting: typo in RepositoryValidationInterceptorFactoryDstu3

* Boyscouting: use List.of instead of Guava; use StandardCharsets instead of Guava; remove unused imports

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Co-authored-by: Gerlach, Winfried <Winfried.Gerlach@draeger.com>

src/main/java/ca/uhn/fhir/jpa/starter/ips/StarterIpsConfig.java

@@ -15,18 +15,18 @@ import ca.uhn.fhir.jpa.ips.generator.IpsGeneratorSvcImpl;
 @Conditional(IpsConfigCondition.class)
 public class StarterIpsConfig {
 	@Bean 
-	IIpsGenerationStrategy IpsGenerationStrategy()
+	IIpsGenerationStrategy ipsGenerationStrategy()
 	{
 		return new DefaultIpsGenerationStrategy();
 	}
 
 	@Bean
-	public IpsOperationProvider IpsOperationProvider(IIpsGeneratorSvc theIpsGeneratorSvc){
+	public IpsOperationProvider ipsOperationProvider(IIpsGeneratorSvc theIpsGeneratorSvc){
 		return new IpsOperationProvider(theIpsGeneratorSvc);
 	}
 
 	@Bean
-	public IIpsGeneratorSvc IpsGeneratorSvcImpl(FhirContext theFhirContext, IIpsGenerationStrategy theGenerationStrategy, DaoRegistry theDaoRegistry)
+	public IIpsGeneratorSvc ipsGeneratorSvcImpl(FhirContext theFhirContext, IIpsGenerationStrategy theGenerationStrategy, DaoRegistry theDaoRegistry)
 	{
 		return new IpsGeneratorSvcImpl(theFhirContext, theGenerationStrategy, theDaoRegistry);
 	}