Configure healthcheck to avoid error logs (#530)

Added options to the healthcheck to avoid seeing "FATAL: role "root"
does not exist" many many times in the log. The message still appears
only two times when starting the container but that's probably caused by
something else.

---------

Co-authored-by: Brian Kroth <bpkroth@users.noreply.github.com>
Co-authored-by: Brian Kroth <bpkroth@microsoft.com>

Author: buonhobo

docker/postgres-latest/docker-compose.yml

@@ -14,7 +14,7 @@ services:
     ports:
       - "5432:5432"
     healthcheck:
-      test: pg_isready
+      test: [ "CMD-SHELL", "pg_isready -d $${POSTGRES_DB} -U $${POSTGRES_USER}" ]
       interval: 10s
       timeout: 5s
       retries: 5
@@ -33,4 +33,4 @@ services:
     ports:
       - "8888:8080"
     volumes:
-      - ${PWD}/servers.json:/pgadmin4/servers.json
+      - ${PWD}/servers.json:/pgadmin4/servers.json

docker/postgres-latest/up.sh

@@ -10,10 +10,10 @@ docker compose up -d $services
 
 # Wait until ready
 for i in {1..5}; do
-    if docker exec postgres pg_isready && sleep 2 && docker exec postgres pg_isready; then
+    if /usr/bin/docker inspect --format="{{print .State.Health.Status}}" postgres | grep -q -x healthy; then
         break
     else
-        sleep 5
+        sleep 10
     fi
 done