From 86733af89d67a0d117cd7e3e32c8e4887abc8ee4 Mon Sep 17 00:00:00 2001
From: Scott Koranda <skoranda@gmail.com>
Date: Wed, 12 Apr 2023 08:06:21 -0500
Subject: [PATCH] container require modern bash and getopt

---
 container/build.sh | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/container/build.sh b/container/build.sh
index a3889036..094acccc 100755
--- a/container/build.sh
+++ b/container/build.sh
@@ -517,6 +517,19 @@ function main() {
     local repository
     local suffix
 
+    # Require bash version 4 or higher.
+    if [[ ! "${BASH_VERSINFO:-0}" -ge 4 ]]; then
+        err "ERROR: Bash version must be 4 or greater"
+        exit 1
+    fi
+
+    # Require getopt version 2.32 or greater.
+    getopt_version=$(/usr/bin/getopt --version | cut -d' ' -f4 | cut -c1-4 | tr -d .)
+    if [[ ! "${getopt_version:-0}" -ge 232 ]]; then
+        err "ERROR: getopt version must be 2.32 or greater"
+        exit 1
+    fi
+
     declare -a docker_build_flags=()
 
     gnu_getopt_out=$(/usr/bin/getopt \