Fix build db base image symlink error (goharbor#18673)

Fix goharbor#18672

Signed-off-by: Yang Jiao <jiaoya@vmware.com>
Signed-off-by: Wilfred Almeida <60785452+WilfredAlmeida@users.noreply.github.com>

make/photon/db/Dockerfile.base

@@ -2,7 +2,8 @@ FROM photon:4.0
 
 ENV PGDATA /var/lib/postgresql/data
 
-RUN tdnf install -y shadow gzip postgresql13 postgresql findutils bc >> /dev/null \
+RUN tdnf install -y postgresql13 >> /dev/null
+RUN tdnf install -y shadow gzip postgresql findutils bc >> /dev/null \
     && groupadd -r postgres --gid=999 \
     && useradd -m -r -g postgres --uid=999 postgres \
     && mkdir -p /docker-entrypoint-initdb.d \