gdb in docker container returns "ptrace: Operation not permitted."I've checked /proc/sys/kernel/yama/ptrace_scope in the container and on the host - both report the value as zero but when attached to pid one gdb reports Reading symbols from /opt/my-web-proxy/bin/my-web-proxy...done. Attaching to program: /opt/my-web-proxy/bin/my-web-proxy, process 1 ptrace: Operation not permitted. I've also tried attached to the container with the privileged flag docker exec --
