From 0ea5eed85d478da51bda30fffed65e5ad92f59d3 Mon Sep 17 00:00:00 2001
From: Julien Eluard <julien.eluard@gmail.com>
Date: Mon, 22 Jan 2024 16:01:04 +0100
Subject: [PATCH] chore: improve test guide

---
 CONTRIBUTING.md | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index fbc23571aa37..db28b03aa39d 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -32,6 +32,14 @@ To run tests:
 - :test_tube: Run `yarn check-types` to check TypeScript types.
 - :test_tube: Run `yarn lint` to run the linter (ESLint).
 
+Note that to run `test:e2e`, first ensure that the environment is correctly setup by running the `run_e2e_env.sh` script.
+
+```sh
+GETH_DOCKER_IMAGE=ethereum/client-go:v1.11.6  NETHERMIND_DOCKER_IMAGE=nethermind/nethermind:1.18.0 ./scripts/run_e2e_env.sh start
+```
+
+Similarly, run `yarn download-spec-tests` in both folders `packages/beacon-node` and `packages/validator` before running `yarn test:spec`.
+
 Contributing to tests:
 
 - Test must not depend on external live resources, such that running tests for a commit must be deterministic: