diff --git a/.env.sample b/.env.sample
new file mode 100644
index 0000000..b8eb2be
--- /dev/null
+++ b/.env.sample
@@ -0,0 +1,15 @@
+APP=postfix_relay
+STACK_NAME=postfix_relay
+
+DOMAIN=example.com
+LETS_ENCRYPT_ENV=production
+
+# Postfix options, see
+# https://github.com/bokysan/docker-postfix#configuration-options
+#TZ=Europe/London
+#INBOUND_DEBUGGING=1
+
+# $DOMAIN will be added by default, specify any more here:
+#EXTRA_SENDER_DOMAINS="app.example.com"
+# Replace *.example.com with example.com in outgoing mail
+#MASQUERADED_DOMAINS="example.com"
diff --git a/.envrc.sample b/.envrc.sample
deleted file mode 100644
index ef4ed71..0000000
--- a/.envrc.sample
+++ /dev/null
@@ -1,15 +0,0 @@
-export APP=postfix_relay
-export STACK_NAME=postfix_relay
-
-export DOMAIN=example.com
-export LETS_ENCRYPT_ENV=production
-
-# Postfix options, see
-# https://github.com/bokysan/docker-postfix#configuration-options
-#export TZ=Europe/London
-#export INBOUND_DEBUGGING=1
-
-# $DOMAIN will be added by default, specify any more here:
-#export EXTRA_SENDER_DOMAINS="app.example.com"
-# Replace *.example.com with example.com in outgoing mail
-#export MASQUERADED_DOMAINS="example.com"