fix: add conincidentally ignored files (#2)

Author: givanov

build/bin/entrypoint

@@ -0,0 +1,3 @@
+#!/bin/sh -e
+
+exec ${OPERATOR} $@

build/bin/user_setup

@@ -0,0 +1,11 @@
+#!/bin/sh
+set -x
+
+# ensure $HOME exists and is accessible by group 0 (we don't know what the runtime UID will be)
+echo "${USER_NAME}:x:${USER_UID}:0:${USER_NAME} user:${HOME}:/sbin/nologin" >> /etc/passwd
+mkdir -p ${HOME}
+chown ${USER_UID}:0 ${HOME}
+chmod ug+rwx ${HOME}
+
+# no need for this script to remain in the image after running
+rm $0