Merge pull request #991 from jgwerner/update-dockerfile

chore: Replace ADD with COPY

base-notebook/Dockerfile

@@ -42,8 +42,8 @@ ENV CONDA_DIR=/opt/conda \
 ENV PATH=$CONDA_DIR/bin:$PATH \
     HOME=/home/$NB_USER
 
-# Add a script that we will use to correct permissions after running certain commands
-ADD fix-permissions /usr/local/bin/fix-permissions
+# Copy a script that we will use to correct permissions after running certain commands
+COPY fix-permissions /usr/local/bin/fix-permissions
 RUN chmod a+rx /usr/local/bin/fix-permissions
 
 # Enable prompt color in the skeleton .bashrc before creating the default NB_USER
@@ -124,7 +124,7 @@ EXPOSE 8888
 ENTRYPOINT ["tini", "-g", "--"]
 CMD ["start-notebook.sh"]
 
-# Add local files as late as possible to avoid cache busting
+# Copy local files as late as possible to avoid cache busting
 COPY start.sh /usr/local/bin/
 COPY start-notebook.sh /usr/local/bin/
 COPY start-singleuser.sh /usr/local/bin/