fix: [compose] prevent session directory to disappear

bin/compose

@@ -311,6 +311,7 @@ list_compose_vars() {
 get_running_compose_containers() {
     ## XXXvlab: docker bug: there will be a final newline anyway
     docker ps --filter label="compose.service" --format='{{.ID}}'
+    docker ps --filter label="compose" --format='{{.ID}}'
 }
 
 get_volumes_for_container() {
@@ -936,6 +937,7 @@ mk_docker_run_options() {
         "-e" "HOST_COMPOSE_LAUNCHER_OPTS=$SESSION_DIR/$UID-$hash"
         "-e" "COMPOSE_LAUNCHER_OPTS=$dest"
         "-e" "COMPOSE_LAUNCHER_BIN=$COMPOSE_LAUNCHER_BIN"
+        "--label" "compose=1"
     )
     p0 "${additional_docker_run_opts[@]}" >> "$filename"
     docker_run_opts+=("${additional_docker_run_opts[@]}")