add some dagster files

dagster/Dockerfile.code

@@ -0,0 +1,20 @@
+FROM python:3.12-slim
+
+# Checkout and install dagster libraries needed to run the gRPC server
+# exposing your repository to dagit and dagster-daemon, and to load the DagsterInstance
+
+COPY dagster-requirements.txt requirements.txt
+RUN pip install uv
+RUN uv pip install -r requirements.txt --system
+RUN uv pip install polars-lts-cpu --system
+
+# Add repository code
+WORKDIR /opt/dagster/home
+
+# Run dagster gRPC server on port 4000
+EXPOSE 4000
+
+# CMD allows this to be overridden from run launchers or executors that want
+# to run other commands against your repository
+#CMD ["dagster", "api", "grpc", "-h", "0.0.0.0", "-p", "4000", "-f", "repo.py"]
+CMD ["dagster", "code-server", "start", "-h", "0.0.0.0", "-p", "4000", "-f", "repo.py"]