IPTables issue after installing Docker

Before installing Docker I had worked IPTables configurations like this

sysctl net.ipv4.ip_forward=1
iptables -t nat -A PREROUTING -p tcp --dport port -j DNAT --to-destination ip:port
iptables -t nat -A POSTROUTING -j MASQUERADE

for port forwarding using IPTables.
But after installing Docker this configurations not working any more.

I've tried to delete all IPTables rules and configure again but its not working.
Is there any one who had the same issue ? or can help me with this ?