[Feature] Deprecate Alpine Image usage (#745)

Author: ajanikow

CHANGELOG.md

@@ -1,6 +1,7 @@
 # Change Log
 
 ## [master](https://github.com/arangodb/kube-arangodb/tree/master) (N/A)
+- Deprecate Alpine image usage
 - Use persistent name and namespace in ArangoDeployment reconcilation loop
 
 ## [1.1.9](https://github.com/arangodb/kube-arangodb/tree/1.1.9) (2021-05-28)

main.go

@@ -145,6 +145,7 @@ func init() {
 	f.BoolVar(&operatorOptions.enableStorage, "operator.storage", false, "Enable to run the ArangoLocalStorage operator")
 	f.BoolVar(&operatorOptions.enableBackup, "operator.backup", false, "Enable to run the ArangoBackup operator")
 	f.StringVar(&operatorOptions.alpineImage, "operator.alpine-image", UBIImageEnv.GetOrDefault(defaultAlpineImage), "Docker image used for alpine containers")
+	f.MarkDeprecated("operator.alpine-image", "Value is not used anymore")
 	f.StringVar(&operatorOptions.metricsExporterImage, "operator.metrics-exporter-image", MetricsExporterImageEnv.GetOrDefault(defaultMetricsExporterImage), "Docker image used for metrics containers by default")
 	f.StringVar(&operatorOptions.arangoImage, "operator.arango-image", ArangoImageEnv.GetOrDefault(defaultArangoImage), "Docker image used for arango by default")
 	f.BoolVar(&chaosOptions.allowed, "chaos.allowed", false, "Set to allow chaos in deployments. Only activated when allowed and enabled in deployment")
@@ -328,7 +329,6 @@ func newOperatorConfigAndDeps(id, namespace, name string) (operator.Config, oper
 		EnableStorage:               operatorOptions.enableStorage,
 		EnableBackup:                operatorOptions.enableBackup,
 		AllowChaos:                  chaosOptions.allowed,
-		AlpineImage:                 operatorOptions.alpineImage,
 		MetricsExporterImage:        operatorOptions.metricsExporterImage,
 		ArangoImage:                 operatorOptions.arangoImage,
 		SingleMode:                  operatorOptions.singleMode,

pkg/operator/operator.go

@@ -88,7 +88,6 @@ type Config struct {
 	PodName                     string
 	ServiceAccount              string
 	LifecycleImage              string
-	AlpineImage                 string
 	ArangoImage                 string
 	MetricsExporterImage        string
 	EnableDeployment            bool

pkg/util/k8sutil/pods.go

@@ -274,7 +274,7 @@ func RocksdbEncryptionReadOnlyVolumeMount() core.VolumeMount {
 func ArangodInitContainer(name, id, engine, executable, operatorImage string, requireUUID bool, securityContext *core.SecurityContext) core.Container {
 	uuidFile := filepath.Join(ArangodVolumeMountDir, "UUID")
 	engineFile := filepath.Join(ArangodVolumeMountDir, "ENGINE")
-	var command []string = []string{
+	var command = []string{
 		executable,
 		"uuid",
 		"--uuid-path",