431 - Sort array values in state cache to mitigate erroneous "state h…

…as changed" messages and slow test startup

src/main/groovy/com/avast/gradle/dockercompose/tasks/ComposeUp.groovy

@@ -209,6 +209,9 @@ abstract class ComposeUp extends DefaultTask {
         }
     }
 
+    private static final VOLATILE_STATE_KEYS = ['RunningFor']
+    private static final UNSTABLE_ARRAY_STATE_KEYS = ['Mounts', 'Ports', 'Networks', 'Labels', 'Publishers']
+
     @Internal
     protected def getStateForCache() {
         String processesAsString = composeExecutor.get().execute('ps', '--format', 'json')
@@ -224,8 +227,8 @@ abstract class ComposeUp extends DefaultTask {
             List<Object> transformed = processes.collect {
                 // Status field contains something like "Up 8 seconds", so we have to strip the duration.
                 if (it.containsKey('Status') && it.Status.startsWith('Up ')) it.Status = 'Up'
-                it.remove('RunningFor') // It also contains a duration information.
-                it.remove('Labels') // The order of labels is not stable.
+                VOLATILE_STATE_KEYS.each { key -> it.remove(key) }
+                UNSTABLE_ARRAY_STATE_KEYS.each { key -> it[key] = parseAndSortStateArray(it[key]) }
                 it
             }
             processesState = transformed.join('\t')
@@ -235,6 +238,18 @@ abstract class ComposeUp extends DefaultTask {
         processesState + composeExecutor.get().execute('config') + startedServices.get().join(',')
     }
 
+    protected Object parseAndSortStateArray(Object list) {
+        if (list instanceof List) {
+            //Already provided as a List, no pre-parsing needed
+            return list.sort { (first, second) -> first.toString() <=> second.toString() }
+        } else if (list instanceof String && list.contains(",")) {
+            //Not already a list, but a comma separated string
+            return list.split(',').collect { it.trim() }.sort()
+        } else {
+            return list
+        }
+    }
+
     protected Iterable<ServiceInfo> loadServicesInfo(Iterable<String> servicesNames) {
         // this code is little bit complicated - the aim is to execute `docker inspect` just once (for all the containers)
         Map<String, Iterable<String>> serviceToContainersIds = composeExecutor.get().getContainerIds(servicesNames)