Use base64 for START_SCRIPT_BASE64 decode

Author: vholer

src/etc/one-context.d/net-97-start-script

@@ -8,7 +8,7 @@ START_SCRIPT_AVAILABLE=no
 chmod 700 "${TMP_DIR}"
 
 if [ -n "$START_SCRIPT_BASE64" ]; then
-    echo -en "$START_SCRIPT_BASE64" | openssl enc -d -base64 -A > $TMP_FILE
+    echo -en "$START_SCRIPT_BASE64" | base64 -d > $TMP_FILE
     START_SCRIPT_AVAILABLE=yes
 elif [ -n "$START_SCRIPT" ]; then
     echo -en "$START_SCRIPT" > $TMP_FILE