new: add restart policy 'unless-stopped' to services.

bin/compose-core

@@ -2829,6 +2829,11 @@ _get_docker_compose_mixin_from_metadata_cached() {
             mixins+=("volumes:"$'\n'"$volumes")
         fi
 
+        type="$(printf "%s" "$metadata" | shyaml get-value type 2>/dev/null)" || true
+        if [ "$type" != "run-once" ]; then
+            mixins+=("restart: unless-stopped")
+        fi
+
         docker_compose=$(printf "%s" "$metadata" | shyaml get-value -y "docker-compose" 2>/dev/null) || true
         if [ "$docker_compose" ]; then
             mixins+=("$docker_compose")