Update Dockerfile

Dockerfile

@@ -9,4 +9,17 @@ RUN echo 'admin ALL=(ALL) NOPASSWD: ALL' > /etc/sudoers
 USER admin
 WORKDIR /home/admin
 
-CMD whoami && pwd && (echo pass | su -c 'whoami && pwd' 1001)
+COPY <<EOF /home/admin/su.sh
+#!/usr/bin/expect
+
+set user [lindex $argv 0]
+set password [lindex $argv 1]
+set command [lindex $argv 2]
+
+spawn su - $user -c "$command"
+expect "Password:"
+send "$password\r"
+interact
+EOF
+
+CMD whoami && pwd && (echo pass | /home/admin/su.sh 1001 pass "whoami && pwd")