chore: be more specific in help text

Author: pmoscode

README.md

@@ -12,7 +12,7 @@ Usage of hcuc:
   --docker-hub-repo string
         DockHub repo to check tag versions
   --exclude-versions string
-        Versions to exclude from check
+        Versions to exclude from check  (on multiple versions: separated by comma)
   --fail-on-update
         Return exit code 1, if update is available
   --helm-chart-path string
@@ -24,4 +24,5 @@ Flags `--docker-hub-repo string` and `--helm-chart-path` are required.
 Per default, it shows a small table with the current version and all available versions.
 When `--fail-on-update` is set, the app is exiting with code 1.
 
-`--exclude-versions` can be set, to ignore / exclude version on DockerHub from the check.
+`--exclude-versions` can be set, to ignore / exclude version on DockerHub from the check.
+You can specify multiple versions and/or use ranges (^,~).

pkg/cli/main.go

@@ -17,7 +17,7 @@ type Options struct {
 func getCliOptionsParameters() *Options {
 	dockerHubRepository := cli.NewParameter[string]("docker-hub-repo", "", "DockHub repo to check tag versions", "HCUC_DOCKER_HUB_REPOSITORY")
 	helmChartPath := cli.NewParameter[string]("helm-chart-path", ".", "Helm chart to check for updates", "HCUC_HELM_CHART_PATH")
-	excludeVersions := cli.NewParameter[string]("exclude-versions", "", "Versions to exclude from check", "HCUC_EXCLUDE_VERSIONS")
+	excludeVersions := cli.NewParameter[string]("exclude-versions", "", "Versions to exclude from check (on multiple versions: separated by comma)", "HCUC_EXCLUDE_VERSIONS")
 	failOnExistingUpdate := cli.NewParameter[bool]("fail-on-update", false, "Return exit code 1, if update is available", "HCUC_FAIL_ON_EXISTING_UPDATE")
 	debug := cli.NewParameter[bool]("debug", false, "Enable debug outputs", "HCUC_DEBUG")