IP Address Linux Containers

Hello All,
Please, i have a problem i try to find a solution since days
i'm a beginner with linux (networking)

In our cluster (10 nodes), we deploy the same image file on each node. So each node has a different ip address. In each image, there are several LXC containers.
When I deploy the same machine image on multiple nodes, I had the same IP address for containers.
Host 1: ip1 Host2: ip2 (ip1#ip2)
ip container c1: 10.0.3.109 ip container c1: 10.0.3.109
ip container c2: 10.0.3.181 ip container c2: 10.0.3.181

Have you an idea please, how can change ip address of containers automatically ?
As i read, i have to change the mac address....

Thanks a lot.
Best Regards.