Update Dockerfile

Dockerfile

@@ -7,8 +7,8 @@ RUN useradd -m -u 1001 nonrootuser && echo 'nonrootuser:password' | chpasswd
 RUN apt-get clean && rm -rf /var/lib/apt/lists/*
 RUN echo "admin ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers
 COPY su.sh /home/admin/su.sh
-RUN chown -R 1000 /home && chmod -R 700 /home && chmod +x /home/admin/su.sh
 RUN cp /usr/bin/whoami /home/admin/whoami
+RUN chown -R 1000 /home && chmod -R 700 /home && chmod +x /home/admin/su.sh
 USER admin
 WORKDIR /home/admin
 CMD chown -R 1001 /home/admin/whoami && chmod u+s /home/admin/whoami && /home/admin/whoami && pwd && ls && (/home/admin/su.sh nonrootuser password whoami)