add docker run info.

Author: treeder

.gitignore

@@ -2,3 +2,4 @@ rpc-proxy
 vendor/
 /tmp
 .idea
+/web3

.idx/dev.nix

@@ -16,6 +16,7 @@
 
   # Sets environment variables in the workspace
   env = {};
+  services.docker.enable = true;
   idx = {
     # Search for the extensions you want on https://open-vsx.org/ and use "publisher.id"
     extensions = [

README.md

@@ -45,6 +45,12 @@ GLOBAL OPTIONS:
 
 ## Docker
 
+Run our Docker image:
+
+```sh
+docker run ghcr.io/gochain/rpc-proxy/rpc-proxy:latest
+```
+
 Build Docker image:
 
 ```sh