diff --git a/.env.example b/.env.example
index 856780a..c48e153 100644
--- a/.env.example
+++ b/.env.example
@@ -33,7 +33,7 @@ PROVER_ADDRESS="https://zkemail--email-auth-prover-v1-5-2-flask-app.modal.run"
 
 DATABASE_URL="postgres://test@localhost/emailauth_test"
 RELAYER_EMAIL_ADDR=
-WEB_SERVER_ADDRESS="127.0.0.1:4500"
+WEB_SERVER_ADDRESS=127.0.0.1:4500 # For docker-compose, use 0.0.0.0
 EMAIL_TEMPLATES_PATH=./eml_templates
 REGEX_JSON_DIR_PATH="./src/regex_json"
 
@@ -44,4 +44,6 @@ IC_REPLICA_URL="https://a4gq6-oaaaa-aaaab-qaa4q-cai.raw.icp0.io/?id=fxmww-qiaaa-
 
 CIRCUITS_DIR_PATH=../circuits
 
-ERROR_EMAIL_ADDR="error@example.com"
\ No newline at end of file
+ERROR_EMAIL_ADDR="error@example.com"
+
+IC_PEM_CONTENT= # Set the base64-encoded content of ic.pem
\ No newline at end of file