Fix HF Space web UI gateway startup mode

docker/entrypoint.sh

@@ -10,6 +10,13 @@ export HERMES_HOME="$(python3 "$RUNTIME_HELPER" home)"
 # When started as root (the default), optionally remap the hermes user/group
 # to match host-side ownership, fix volume permissions, then re-exec as hermes.
 if [ "$(id -u)" = "0" ]; then
+    # HF Spaces run inside containers, but they don't always expose /.dockerenv.
+    # hermes-web-ui uses that marker to choose detached "gateway run" mode
+    # instead of system-service "gateway start", which times out in Spaces.
+    if [ -n "${SPACE_ID:-}${SPACE_HOST:-}" ] && [ ! -e "/.dockerenv" ]; then
+        touch "/.dockerenv" 2>/dev/null || true
+    fi
+
     if [ -n "$HERMES_UID" ] && [ "$HERMES_UID" != "$(id -u hermes)" ]; then
         echo "Changing hermes UID to $HERMES_UID"
         usermod -u "$HERMES_UID" hermes

tests/hermes_cli/test_space_web_ui_runtime_requirements.py

@@ -21,3 +21,10 @@ def test_space_dockerfile_installs_ca_certificates_for_git_clone():
     dockerfile = Path("Dockerfile").read_text(encoding="utf-8")
 
     assert "ca-certificates" in dockerfile
+
+
+def test_space_entrypoint_marks_hf_space_as_container_for_web_ui():
+    entrypoint = Path("docker/entrypoint.sh").read_text(encoding="utf-8")
+
+    assert 'touch "/.dockerenv"' in entrypoint
+    assert "SPACE_ID" in entrypoint or "SPACE_HOST" in entrypoint