Better instructions

README.md

@@ -17,4 +17,25 @@ Install python dependencies :
 poetry install
 ```
 
-### Docker
+### Docker
+
+On the host, you'll need `docker` and `docker-compose-plugin`.
+
+Clone this repo, edit the `docker-compose.yml` file to suit your needs, and set `config/config.toml` to reflect you infrastructure.
+
+You will need to create an empty `config/dnnsmasq.conf` for the first launch (it will be generated by the main container, but the file needs to exist).
+
+Launch `docker compose`, get the ip address of the polyculenetwork container, and set manual routes via this ip:
+
+```bash
+ip route add <translated remote network> via <container ip>
+```
+
+Finally, run on the host
+
+```bash
+sysctl -w net.ipv4.ip_forward
+iptables -A FORWARD -j ACCEPT
+```
+
+You will need to run these commands after each restart of the host machine.

docker-compose.yml

@@ -23,6 +23,8 @@ services:
       - LISTEN_PORT=51820
     cap_add:
       - NET_ADMIN
+    sysctls:
+      net.ipv4.ip_forward: 1
     networks:
       net1:
         ipv4_address: 172.20.1.11
@@ -59,4 +61,4 @@ networks:
   internet:
     ipam:
       config:
-        - subnet: 172.20.0.0/24
+        - subnet: 172.20.0.0/24