new: provide ``option-get`` with possible interpolation.

bin/compose-core

@@ -1548,6 +1548,18 @@ yaml_get_interpret() {
 export -f yaml_get_interpret
 
 
+options-get () {
+    local key="$1" out
+    service_def=$(get_compose_service_def "$SERVICE_NAME") || return 1
+    if ! out=$(echo "$service_def" | shyaml -y get-value "options.$key" 2>/dev/null); then
+        err "The key $WHITE$key$NORMAL was not found in base service compose definition.."
+        return 1
+    fi
+    echo "$out" | yaml_get_interpret
+}
+export -f options-get
+
+
 relation-base-compose-get () {
     local key="$1" out
     if ! out=$(echo "$RELATION_BASE_COMPOSE_DEF" | shyaml -y get-value "options.$key" 2>/dev/null); then