Changes

Dockerfile

@@ -31,7 +31,7 @@ RUN apt-get update && \
 #    echo 'admin:password' | chpasswd && \
 #    echo 'ubuntu:password' | chpasswd && \
 
-RUN groupadd -r admin && useradd -r -g admin -G sudo -m -s /bin/bash admin && \
+RUN useradd -m -s /bin/bash admin && \
     usermod -aG sudo admin && \
     echo "admin:password" | sudo chpasswd && \
     echo "admin ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers && \