changing script to require bash (#2926)

* changing script to require bash

* switching from bash back to sh to support base images without bash for auxiliary images

Author: robertpatrick

operator/src/main/resources/scripts/auxImage.sh

@@ -1,5 +1,7 @@
 #!/bin/sh
-
+# Copyright (c) 2021, 2022, Oracle and/or its affiliates.
+# Licensed under the Universal Permissive License v 1.0 as shown at https://oss.oracle.com/licenses/upl.
+#
 # Init container script for the auxiliary image feature.
 # See 'domain.spec.serverPod.auxiliaryImages' for details.
 
@@ -24,7 +26,7 @@ scriptDir="$( cd "$(dirname "$0")" > /dev/null 2>&1 ; pwd -P )"
 
 if [ "${debug}" == "true" ]; then set -x; fi;
 
-source ${scriptDir}/utils_base.sh
+. ${scriptDir}/utils_base.sh
 [ $? -ne 0 ] && echo "[SEVERE] Missing file ${scriptDir}/utils_base.sh" && exit 1
 UNKNOWN_SHELL=true