tweaks

Dockerfile

@@ -33,8 +33,9 @@ RUN --mount=type=cache,id=pip,uid=9000,gid=9000,target=/home/csst/.cache \
     && pip install pkg/csst-dfs-client \
     && pip install pkg/csst_common \
     && pip install pkg/csst_dadel \
-    && pip install -r requirements.txt \
-    && rm -rf pkg requirements.txt
+    && pip install pkg/csst_dag \
+    && pip install -r pkg/csst_dag/requirements.txt \
+    && rm -rf pkg
 # change workdir
 WORKDIR /pipeline/output