diff --git a/docker-compose/docker-compose.yml b/docker-compose/docker-compose.yml
index 4926dad932..9777d1fdd2 100644
--- a/docker-compose/docker-compose.yml
+++ b/docker-compose/docker-compose.yml
@@ -189,7 +189,7 @@ services:
       - "/bin/bash"
       - "-c"
     command:
-      - "until pg_isready -h compute -p 55433 ; do
+      - "until pg_isready -h compute -p 55433 -U cloud_admin ; do
             echo 'Waiting to start compute...' && sleep 1;
          done"
     depends_on:
diff --git a/docs/docker.md b/docs/docker.md
index 704044377f..9761cc4346 100644
--- a/docs/docker.md
+++ b/docs/docker.md
@@ -48,6 +48,7 @@ Creating docker-compose_storage_broker_1       ... done
 2. connect compute node
 ```
 $ echo "localhost:55433:postgres:cloud_admin:cloud_admin" >> ~/.pgpass
+$ chmod 600 ~/.pgpass
 $ psql -h localhost -p 55433 -U cloud_admin
 postgres=# CREATE TABLE t(key int primary key, value text);
 CREATE TABLE