Make documentation standalone and generalize examples

backend/Dockerfile

@@ -66,7 +66,7 @@ RUN --mount=type=cache,target=/root/.cache/uv \
       $(for e in $(echo "$EXTRAS" | tr , ' '); do printf -- '--extra %s ' "$e"; done)
 
 # Connectors are ordinary installed packages found through the
-# `fluksio.node_types` entry point. `make connectors` builds them into here;
+# `fluksio.node_types` entry point. Place built connector wheels here;
 # an image with none is the normal case.
 COPY ./backend/connector-wheels /tmp/connector-wheels
 RUN --mount=type=cache,target=/root/.cache/uv \