diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
index 95f2787..9799f9a 100644
--- a/.devcontainer/Dockerfile
+++ b/.devcontainer/Dockerfile
@@ -4,6 +4,11 @@ COPY env.yaml env.yaml
 RUN . /opt/conda/etc/profile.d/conda.sh && \
         conda env create -n workshop --file=env.yaml
 
+RUN  . /opt/conda/etc/profile.d/conda.sh && \
+        conda clean --all -y -f
+
+RUN rm -rf /var/lib/apt/lists/*
+
 COPY create_conda_user /opt/docker/bin/create_conda_user
 RUN chmod +x /opt/docker/bin/create_conda_user
 RUN /opt/docker/bin/create_conda_user
@@ -12,4 +17,4 @@ RUN /opt/docker/bin/create_conda_user
 # ENTRYPOINT [ "/opt/conda/bin/tini", "--", "/opt/docker/bin/workshop_entrypoint" ]
 # CMD [ "/bin/bash" ]
 
-USER conda 
\ No newline at end of file
+USER conda