feat(l2): docker-compose with blockscout and ethrex l2 dev and l2-hub

tooling/l2/dev/README.md

@@ -0,0 +1,23 @@
+# L2 dev environment
+
+## Usage
+
+1. Download the docker compose 
+
+curl -L https://raw.githubusercontent.com/lambdaclass/ethrex/main/tooling/l2/dev/docker-compose.yaml -o docker-compose.yaml
+
+2. Start the containers
+
+```shell
+docker compose up
+```
+
+3. Stop the containers and delete the volumes
+
+> [!NOTE]
+> It is recommended to delete all the volumes because blockscout will keep the old state of the blockchain on its db
+> but ethrex l2 dev mode starts a new chain on every restart. For this reason we use the `-v` flag
+
+```shell
+docker compose down -v
+```