use app directory

docker/Dockerfile

@@ -27,8 +27,7 @@ RUN --mount=type=cache,id=apt,target=/var/cache/apt \
 USER csst
 # copy VCS roots into image
 COPY --chown=csst:csst . /pipeline
-RUN mv pkg/csst-dag/csst_dag/docker/csst* /pipeline/app/ \
-    && pkg/csst-dag/csst_dag/config/default.toml /pipeline/app/config.toml \
+RUN mv pkg/csst-dag/app /pipeline/app \
     && chmod +x /pipeline/app/csst
 # install packages & requirements
 RUN --mount=type=cache,id=pip,uid=9000,gid=9000,target=/home/csst/.cache \