Created annotations filter

main.go

@@ -145,7 +145,7 @@ func main() {
 	stringFlagOrEnv(&autoInstrumentationApacheHttpd, "auto-instrumentation-apache-httpd-image", "RELATED_IMAGE_AUTO_INSTRUMENTATION_APACHE_HTTPD", fmt.Sprintf("ghcr.io/open-telemetry/opentelemetry-operator/autoinstrumentation-apache-httpd:%s", v.AutoInstrumentationApacheHttpd), "The default OpenTelemetry Apache HTTPD instrumentation image. This image is used when no image is specified in the CustomResource.")
 	stringFlagOrEnv(&autoInstrumentationNginx, "auto-instrumentation-nginx-image", "RELATED_IMAGE_AUTO_INSTRUMENTATION_NGINX", fmt.Sprintf("ghcr.io/open-telemetry/opentelemetry-operator/autoinstrumentation-apache-httpd:%s", v.AutoInstrumentationNginx), "The default OpenTelemetry Nginx instrumentation image. This image is used when no image is specified in the CustomResource.")
 	pflag.StringArrayVar(&labelsFilter, "label", []string{}, "Labels to filter away from propagating onto deploys")
-	pflag.StringArrayVar(&annotationsFilter, "annotations-filter", []string{}, "Annotations to filter away from propagating onto deploys")
+	pflag.StringArrayVar(&annotationsFilter, "annotations-filter", []string{}, "Annotations to filter away from propagating onto deploys. It should be a string array that contains any match of the regular expression pattern. Example: --annotations-filter=*filter.out will filter out annotations that looks like: annotation.filter.out: true")
 	pflag.IntVar(&webhookPort, "webhook-port", 9443, "The port the webhook endpoint binds to.")
 	pflag.StringVar(&tlsOpt.minVersion, "tls-min-version", "VersionTLS12", "Minimum TLS version supported. Value must match version names from https://golang.org/pkg/crypto/tls/#pkg-constants.")
 	pflag.StringSliceVar(&tlsOpt.cipherSuites, "tls-cipher-suites", nil, "Comma-separated list of cipher suites for the server. Values are from tls package constants (https://golang.org/pkg/crypto/tls/#pkg-constants). If omitted, the default Go cipher suites will be used")