[Feature] Get network name and node from env vars

Description

When running the node using docker-compose, it would be helpful to get the network name and RPC url from environment variables instead of having to modify docker/docker-compose.yml#L22.

This change would do the trick:

diff --git a/docker/docker-compose.yml b/docker/docker-compose.yml
index c78c2eb21..36e8beba7 100644
--- a/docker/docker-compose.yml
+++ b/docker/docker-compose.yml
@@ -19,7 +19,7 @@ services:
       postgres_pass: let-me-in
       postgres_db: graph-node
       ipfs: 'ipfs:5001'
-      ethereum: 'mainnet:http://host.docker.internal:8545'
+      ethereum: ${NETWORK_NAME:-mainnet}:${ETHEREUM_RPC_URL:-http://host.docker.internal:8545}
       GRAPH_LOG: info
   ipfs:
     image: ipfs/kubo:v0.17.0

What do you think?

Are you aware of any blockers that must be resolved before implementing this feature? If so, which? Link to any relevant GitHub issues.

No.

Some information to help us out

• Tick this box if you plan on implementing this feature yourself.
• I have searched the issue tracker to make sure this issue is not a duplicate.

Comienza con docker/docker-compose.yml, en la configuración de ethereum alrededor de la línea 22, y revisa los valores predeterminados propuestos de las variables de entorno para el nombre de la red y la URL de RPC. Valida la configuración de Compose y confirma que ambas variables sobrescriben sus valores predeterminados sin requerir modificaciones en el archivo.