Update Dockerfile

Dockerfile

@@ -25,6 +25,8 @@ WORKDIR /root/opentrons
 # Run make command in robot-server directory
 RUN /bin/bash -c "source ~/.bashrc && make -C robot-server dev"
 
+# Set up a new user named "user" with user ID 1000
+RUN useradd -m -u 1000 user
 
 # Switch to the "user" user
 USER user