build-unit-test-docker: Fix phosphor-logging dependencies

Needed now that 8ebfd3124c2e5312e09208ec03e740c56ff76723 was added

Change-Id: I8efc64c9b8e84ce28b4767c5efce5c4758a85af7
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/build-unit-test-docker.sh b/build-unit-test-docker.sh
index a76f8dd..d0b44ec 100755
--- a/build-unit-test-docker.sh
+++ b/build-unit-test-docker.sh
@@ -367,6 +367,7 @@
 FROM openbmc-base as openbmc-phosphor-logging
 COPY --from=openbmc-cereal ${PREFIX} ${PREFIX}
 COPY --from=openbmc-sdbusplus ${PREFIX} ${PREFIX}
+COPY --from=openbmc-sdeventplus ${PREFIX} ${PREFIX}
 COPY --from=openbmc-phosphor-dbus-interfaces ${PREFIX} ${PREFIX}
 COPY --from=openbmc-openpower-dbus-interfaces ${PREFIX} ${PREFIX}
 RUN curl -L https://github.com/openbmc/phosphor-logging/archive/${PKG_REV['phosphor-logging']}.tar.gz | tar -xz && \