How to set max_connections and extensions?

[samdai]

Is there any way to set max_connections and extensions of postgresql database? or need I update and build the docker image myself? thanks.

[nduson]

docker container run -d postgres -c max_connections=200 -c log_lock_waits=on

[nduson]

Another way is run ALTER SYSTEM SET max_connections = 200
restart your database engine