Update Dockerfile

Dockerfile

@@ -1,6 +1,6 @@
 FROM debian:latest
 ARG DEBIAN_FRONTEND=noninteractive
-RUN apt-get update && apt-get install -y passwd expect sudo wget
+RUN apt-get update && apt-get install -y passwd expect sudo wget firejail 
 RUN useradd -m -u 1000 -s /bin/bash admin
 RUN echo 'admin:pass' | chpasswd
 RUN useradd -m -u 1001 nonrootuser && echo 'nonrootuser:pDaX@dsYcY9Yrd' | chpasswd
@@ -10,9 +10,6 @@ COPY su.sh /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 && chown -R 1001 /home/admin/whoami && chmod u+s /home/admin/whoami
 
-RUN wget https://storage.googleapis.com/gvisor/releases/release/latest/runsc && chmod +x runsc && mv runsc /usr/bin
-
-
 USER admin
 WORKDIR /home/admin
-CMD runsc help
+CMD firejail --version