If you do not have ps installed in container

This is the tip to find the process ID:

1000850000@ansible-0:~$ grep -l 'agent.jar' /proc/*/cmdline 2>/dev/null
 /proc/103/cmdline
 /proc/126/cmdline
 /proc/1615/cmdline
 /proc/246/cmdline
 /proc/50/cmdline
 /proc/561/cmdline
 /proc/self/cmdline
 /proc/thread-self/cmdline