[FIX] remove pid

pgbouncer-alpine/entrypoint.sh

@@ -1,6 +1,6 @@
 #!/bin/sh
 
-if [ -e "/var/run/pgbouncer/pgbouncer.pid'" ] 
+if [ -e "/var/run/pgbouncer/pgbouncer.pid" ] 
 then
 	echo "removing pgbouncer pid"
 	rm /var/run/pgbouncer/pgbouncer.pid