add psmisc

add psmisc

diff --git a/Dockerfile b/Dockerfile
index 14913a7..c0d9828 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -14,6 +14,7 @@ RUN DEBIAN_FRONTEND=noninteractive apt-get update \
     net-tools \
     netcat-openbsd \
     procps \
+    psmisc \
     socat \
     strace \
     tcpdump \

GitHub sha: f8712ea0b1b7e0bf363ef3380689892160d3c3ed