Install libtcmalloc-minimal4 in release container

Our PSCs are configured to use LD_PRELOAD=libtcmalloc-minimal.so.4, so the
container complains noisly when it's missing.  The container does start
without it, but presumably we configure it for a reason, and the container
is not performing optimally without it.

Make it not missing.

Author: piki

Dockerfile.release

@@ -7,6 +7,7 @@ ENV DEBIAN_FRONTEND noninteractive
 RUN apt-get install -y \
       libaio1 \
       libnuma1 \
+      libtcmalloc-minimal4 \
       binutils
 
 ADD dist/ /dist