From 84f99b1e93c039a6f4c3ee1373b1e53a401f8338 Mon Sep 17 00:00:00 2001
From: Paul Makles <me@insrt.uk>
Date: Sun, 5 Feb 2023 16:18:04 +0000
Subject: [PATCH] feat: use separate hostname env variable

---
 .env.example |  4 ++++
 Caddyfile    |  2 +-
 README.md    | 25 +++++++++++++++++++++++++
 3 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/.env.example b/.env.example
index fd7df67..ee1fe20 100644
--- a/.env.example
+++ b/.env.example
@@ -8,6 +8,10 @@ MONGODB=mongodb://database
 # Redis
 REDIS_URI=redis://redis/
 
+# Hostname used for Caddy
+# This should in most cases match REVOLT_APP_URL
+HOSTNAME=http://local.revolt.chat
+
 # URL to where the Revolt app is publicly accessible
 REVOLT_APP_URL=http://local.revolt.chat
 
diff --git a/Caddyfile b/Caddyfile
index 493d3ee..ab856f5 100644
--- a/Caddyfile
+++ b/Caddyfile
@@ -1,4 +1,4 @@
-{$REVOLT_APP_URL} {
+{$HOSTNAME} {
 	route /api* {
 		uri strip_prefix /api
 		reverse_proxy http://api:8000
diff --git a/README.md b/README.md
index bb38154..19385de 100644
--- a/README.md
+++ b/README.md
@@ -95,6 +95,31 @@ You will also want to change the protocols to enable HTTPS:
 + REVOLT_EXTERNAL_WS_URL=wss://my.domain/ws
 ```
 
+### Putting Revolt behind another reverse proxy (or on a non-standard port)
+
+Override the port definitions on `caddy`:
+
+```yml
+# docker-compose.yml
+services:
+  caddy:
+    ports:
+      - "1234:80"
+```
+
+> **Warning**
+> This file is not Git ignored, it may be sufficient to use an override file but that will not remove port 80 / 443 allocations.
+
+Update the hostname used by the web server:
+
+```diff
+# .env
+- HOSTNAME=http://local.revolt.chat
++ HOSTNAME=:80
+```
+
+You can now reverse proxy to http://localhost:1234.
+
 ### Expose database
 
 You can insecurely expose the database by adding a port definition: