Fix test-connect-interpreter-versions ci

Allow empty executable lists with strict bash flags

Author: dbkegley

Justfile

@@ -88,7 +88,7 @@ test chart='all':
 
 test-connect-interpreter-versions:
   #!/usr/bin/env bash
-  set -euxo pipefail
+  set -euo pipefail
   cd ./charts/rstudio-connect && helm dependency build && cd -
 
   # find the default image
@@ -102,6 +102,8 @@ test-connect-interpreter-versions:
 
   for lang in "Python" "Quarto" "R"
   do
+    echo "Testing $lang"
+    
     # print the default connect config file for local execution in ini format
     # print the section and grep for the Executables to find each interpreter
     executables=$(
@@ -110,10 +112,11 @@ test-connect-interpreter-versions:
       --show-only templates/configmap.yaml | \
       sed -n -e "/\[$lang\]/,/\[*\]/ p" | \
       grep Executable | awk -F= '{print $2}' | \
-      xargs)
+      xargs || echo "")
 
     for ex in $executables
     do
+      echo "Checking $ex"
       docker run --rm $image /bin/bash -c "command -v $ex"
     done
   done