added option for matrix-synapse redirection

.env.sample

@@ -13,4 +13,9 @@ LETS_ENCRYPT_ENV=production
 #MAIL_OPTIONS_PORT=587
 #MAIL_OPTIONS_SECURE=false
 #MAIL_OPTIONS_AUTH_USER=smtpuser@example.com
-#MAIL_OPTIONS_AUTH_PASS=XXXX
+#MAIL_OPTIONS_AUTH_PASS=XXXX
+
+## Matrix-Synapse-Redirection
+# If you want to use Ghost on a TLD which you want to use as matrix server name as well
+# COMPOSE_FILE="$COMPOSE_FILE:compose.matrix.yml"
+# MATRIX_DOMAIN=matrix-synapse.example.com

compose.matrix.yml

@@ -0,0 +1,8 @@
+version: "3.8"
+services:
+  app:
+    deploy:
+      labels:
+        - "traefik.http.routers.${STACK_NAME}.middlewares=${STACK_NAME}-redirect-matrix-well-known"
+        - "traefik.http.middlewares.${STACK_NAME}-redirect-matrix-well-known.redirectregex.regex=^https://(.*)/.well-known/matrix/(.*)"
+        - "traefik.http.middlewares.${STACK_NAME}-redirect-matrix-well-known.redirectregex.replacement=https://${MATRIX_DOMAIN}/.well-known/matrix/$$2"