Wait for Postgres ready before running migrations

docker-entrypoint.sh

@@ -1,7 +1,14 @@
 #!/bin/sh
 set -e
 
-echo "[moonbase] running prisma migrate deploy..."
-npx prisma migrate deploy
+echo "Waiting for Postgres to be ready..."
+until nc -z postgres 5432 2>/dev/null; do
+  echo "  Postgres not ready yet, retrying in 2s..."
+  sleep 2
+done
+echo "Postgres is ready."
+
+echo "Running Prisma migrations..."
+./node_modules/.bin/prisma migrate deploy
 
 exec "$@"